1. Adams B, Noel B. Circulation statistics in the evaluation of collection development. Collection Building. 2008;27(2):71–73 Available from: http://dx.doi.org/10.1108/01604950810870227.
2. Alan R, Chrzastowski TE, German L, Wiley L. Approval plan profile assessment in two large ARL libraries. Library Resources & Technical Services. 2011;54(2):64–76 Available from: http://dx.doi.org/10.5860/lrts.54n2.64.
3. Alder NL. Direct purchase as a function of interlibrary loan: Buying books versus borrowing. Journal of Interlibrary Loan, Document Delivery & Electronic Reserves. 2007;18(1):9–15 Available from: http://dx.doi.org/10.1300/J474v18n01-03.
4. Allen M, Ward SM, Wray T, Debus-Lopez KE. Patron-focused services in three US libraries: Collaborative interlibrary loan, collection development and acquisitions. Interlending & Document Supply. 2003;31(2):138–141 Available from: http://dx.doi.org/10.1108/02641610310477215.
5. Alter, A. (2015). The plot twist: E-book sales slip, and print is far from dead. The New York Times. Retrieved from: http://www.nytimes.com.
6. American Library Association. (1982). Diversity in collection development: An interpretation of the Library Bill of Rights. Retrieved from: http://www.ala.org/advocacy/intfreedom/librarybill/interpretations/diversitycollection.
7. American Library Association. (2014). State of America’s libraries report 2014. Retrieved from: http://www.ala.org/news/state-americas-libraries-report-2014/diversity.
8. Anderson KJ, Freeman RS, Hérubel J-PVM, Mykytiuk LJ, Nixon JM, Ward SM. Buy, don’t borrow: Bibliographers’ analysis of academic library collection development through interlibrary loan requests. Collection Management. 2002;27(3/4):1–11 Available from: http://dx.doi.org/10.1300/J105v27n03_01.
9. Anderson KJ, Freeman RS, Hérubel J-PVM, Mykytiuk LJ, Nixon JM, Ward SM. Liberal arts books on demand: A decade of patron-driven collection development, part 1. Collection Management. 2010;35(3/4):125–141 Available from: http://dx.doi.org/10.1080/01462679.2010.486959.
10. Anderson, M. (2015). Technology device ownership: 2015. Retrieved from: http://www.pewinternet.org/2015/10/29/technology-device-ownership-2015/.
11. Anderson R. Collections 2021: The future of the library collection is not a collection. Serials. 2011a;24(3):211–215 Available from: http://dx.doi.org/10.1629/24211.
12. Anderson, R. (2011c, May 31). What patron-driven acquisition (PDA) does and doesn’t mean: An FAQ [Web log post]. Retrieved from: http://scholarlykitchen.sspnet.org/2011/05/31/what-patron-driven-acquisition-pda-does-and-doesnt-mean-an-faq/.
13. Anderson, S., & Seely, S. (2014). Prioritizing use and access: Refining the orbis cascade alliance consortial ebook program. In Poster presented at the ACRL OR & WA Joint Fall Conference, Corbett, OR.
14. Arch X, Anderson R, Thatcher SG. A dialogue on PDA. Against the Grain. 2011;23(3):28–32 Available from: http://dx.doi.org/10.7771/2380-176X.5888.
15. Arndt TS. Getting started with demand-driven acquisitions for e-books Chicago, IL: American Library Association; 2015.
16. Association of Research Libraries. (2012). Expenditure trends in ARL libraries 1986–2012 [graph]. Retrieved from: http://www.arl.org/focus-areas/statistics-assessment/statistical-trends.
17. Bailey TP, Scott AL, Best RD. Cost differentials between e-books and print in academic libraries. College & Research Libraries. 2015;76(1):6–18 Available from: http://dx.doi.org/10.5860/crl.76.1.6.
18. Barnhart AC. Want buy-in? Let your students do the buying! A case study of course-integrated collection development. Collection Management. 2010;35(3–4):237–243 Available from: http://dx.doi.org/10.1080/01462679.2010.486986.
19. Becker BW. Ebooks in the library: The current state of research. Behavioral & Social Sciences Librarian. 2015;34(4):230–233 Available from: http://dx.doi.org/10.1080/01639269.2015.1096156.
20. Benhamou F. Fair use and fair competition for digitized cultural goods: The case of eBooks. Journal of Cultural Economics. 2015;39(2):123–131 Available from: http://dx.doi.org/10.1007/s10824-015-9241-x.
21. Berg SA, Hoffmann K, Dawson D. Not on the same page: Undergraduates’ information retrieval in electronic and print books. Journal of Academic Librarianship. 2010;36(6):518–525 Available from: http://dx.doi.org/10.1016/j.acalib.2010.08.008.
22. Bertuca C, Lelonek C, Tuohy R, et al. Two ILLiad clients, one desktop, purchase on demand: Sharing a university’s collection, staff, and expertise. Journal of Access Services. 2009;6(4):497–512 Available from: http://dx.doi.org/10.1080/15367960903155950.
23. Besen SM, Kirby SN. E-books and libraries: An economic perspective Chicago, IL: American Library Association; 2012.
24. Blake JC, Schleper SP. From data to decisions: Using surveys and statistics to make collection management decisions. Library Collections, Acquisitions, and Technical Services. 2004;28(4):460–464 Available from: http://dx.doi.org/10.1016/j.lcats.2004.09.002.
25. Bodi S, Maier-O’Shea K. The library of Babel: Making sense of collection management in a postmodern world. The Journal of Academic Librarianship. 2005;31(2):143–150 Available from: http://dx.doi.org/10.1016/j.acalib.2004.12.009.
26. Bombeld M, Hanerfeld A. The surprising truth about faculty perception and use of collection development opportunities: One library’s case study. Against the Grain. 2013;16(2):6 Available from: http://dx.doi.org/10.7771/2380-176X.4284.
27. Booth HA, O’Brien K. Demand-driven cooperative collection development: Three case studies from the USA. Interlending & Document Supply. 2011;39(3):148–155 Available from: http://dx.doi.org/10.1108/02641611111164636.
28. Bosman, J. (2011, November 22) Penguin suspends e-book availability to libraries [Web log entry]. Retrieved from: http://mediadecoder.blogs.nytimes.com/2011/11/22/penguin-suspends-e-book-availability-to-libraries/?nl=todaysheadlines&emc=tha26&_r=0.
29. Bracke MS. Science and technology books on demand: A decade of patron-driven collection development, part 2. Collection Management. 2010;35(3–4):142–150 Available from: http://dx.doi.org/10.1080/01462679.2010.486742.
30. Breitbach W, Lambert JE. Patron-driven ebook acquisition. Computers in Libraries. 2011;31(6):17–20.
31. Brinkman Dzwig ZE. Innovative collection development for e-books at the TU Delft Library. Information Services & Use. 2013;33(1):37–39 Available from: http://dx.doi.org/10.3233/ISU-130686.
32. Britten WA. A use statistic for collection management: The 80/20 rule revisited. Library Acquisitions: Practice & Theory. 1990;14(2):183–189 Available from: http://dx.doi.org/10.1016/0364-6408(90)90061-X.
33. Bucknell T. The ‘big deal’approach to acquiring e-books: A usage-based study. Serials: The Journal for the Serials Community. 2010;23(2):126–134.
34. Bucknell T. Buying by the bucketful: A comparative study of e-book acquisition strategies. Insights: The UKSG Journal. 2012;25(1):51–60 Available from: http://dx.doi.org/10.1629/2048-7754.25.1.51.
35. Burrell QL. The 80/20 rule: Library lore or statistical law? Journal of Documentation. 1985;41(1):24–39.
36. Byrd GD, Thomas DA, Hughes KE. Collection development using interlibrary loan borrowing and acquisitions statistics. Bulletin of the Medical Library Association. 1982;70(1):1–9.
37. Campbell, L. (2016, March 23). Self-published titles ‘22% of UK e-book market’ [Web log entry]. Retrieved from: http://www.thebookseller.com/news/self-published-titles-22-e-book-market-325152.
38. Carlock DM, Perry AM. Exploring faculty experiences with e-books: A focus group. Library Hi Tech. 2008;26(2):244–254 Available from: http://dx.doi.org/10.1108/07378830810880342.
39. Carr PL, Collins M. Acquiring articles through unmediated, user-initiated pay per view transactions: An assessment of current practices. Serials Review. 2009;35(4):272–277 Available from: http://dx.doi.org/10.1016/j.serrev.2009.08.006.
40. Carrico S, Leonard M, Gallagher E. Implementing and assessing use-driven acquisitions: A practical guide for librarians Lanham, MD: Rowman & Littlefield Publishers; 2016.
41. Carrico S, Shelton T, Ziegler R. The FSU-UF patron-driven acquisitions plan: A cutting-edge collaboration. Florida Libraries. 2013;56(1):18–23.
42. Carrico SB, Cataldo TT, Botero C, Shelton T. What cost and usage data reveals about e-book acquisitions. Library Resources & Technical Services. 2015;59(3):102–111.
43. Carrigan DP. Data-guided collection development: A promise unfulfilled. College & Research Libraries. 1996;57(5):429–437.
44. Chan, E.K., & Kendall, S.L. (2013). Identifying users of demand-driven E-book programs: Applications for collection development. In Paper presented at the Association of College and Research Libraries 2013 Conference, Indianapolis, IN. Retrieved from: http://www.ala.org/acrl/sites/ala.org.acrl/files/content/conferences/confsandpreconfs/2013/papers/ChanKendell_Identifying.pdf.
45. Chan GRYC. Purchase instead of borrow: An international perspective. Journal of Interlibrary Loan, Document Delivery & Information Supply. 2004;14(4):23–37 Available from: http://dx.doi.org/10.1300/J110v14n04_03.
46. Chicago Public Library. (2016). Retrieved from: http://www.chipublib.org/.
47. Christianson M. Patterns of use of electronic books. Library Collections, Acquisitions, and Technical Services. 2005;29(4):351–363 Available from: http://dx.doi.org/10.1016/j.lcats.2006.03.014.
48. Christianson M, Aucoin M. Electronic or print books: Which are used? Library Collections, Acquisitions, and Technical Services. 2005;29(1):71–81 Available from: http://dx.doi.org/10.1016/j.lcats.2005.01.002.
49. Chrzastowski TE, Wiley LN. E-book use and value in the humanities. Library Resources & Technical Services. 2015;59(4):172–186.
50. Chua HH. 2014 Charleston Conference report: The devil is in the details: Managing the growth of streaming media in library collections. Journal of Electronic Resources Librarianship. 2015;27(1):50–51 Available from: http://dx.doi.org/10.1080/1941126X.2015.999538.
51. Ciszek MP, Young CL. Diversity collection assessment in large academic libraries. Collection Building. 2010;29(4):154–161 Available from: http://dx.doi.org/10.1108/01604951011088899.
52. Clark AM, Levine B, Shane D. Collecting for the platypus—Acquisition and collection management in the Arnold Library. Journal of Hospital Librarianship. 2013;13(1):11–22 Available from: http://dx.doi.org/10.1080/15323269.2013.743207.
53. Cleary RM. The commitment problem: Spending to zero to maximize the efficiency of the collections budget. Library Resources & Technical Services. 2015;59(4):162 Available from: http://dx.doi.org/10.5860/lrts.59n4.162.
54. Courant PN, Nielsen M. On the cost of keeping a book. The idea of order: Transforming research collections for 21st century scholarship Washington, DC: Council on Library and Information Resources; 2010;81–105.
55. Covi LM, Cragin MH. Reconfiguring control in library collection development: A conceptual framework for assessing the shift toward electronic collections. Journal of the American Society for Information Science and Technology. 2004;55(4):312–325 Available from: http://dx.doi.org/10.1002/asi.10375.
56. Currie L, Graves K. A new model for demand-driven acquisition. Kansas Library Association College and University Libraries Section Proceedings. 2012;2(1):12–16.
57. Currie L, Monroe-Gulick A. What do our faculty use? An interdisciplinary citation analysis study. Journal of Academic Librarianship. 2013;39(6):471–480 Available from: http://dx.doi.org/10.1016/j.acalib.2013.08.016.
58. Dahl C. Primed for patron-driven acquisition: A look at the big picture. Journal of Electronic Resources Librarianship. 2012;24(2):119–126 Available from: http://dx.doi.org/10.1080/1941126X.2012.684557.
59. Dahl C. PDA and the humanities: Assessing the fit through an examination of the literature on humanists and e-resources. Electronic Library. 2013;31(6):745–752 Available from: http://dx.doi.org/10.1108/EL-05-2012-0051.
60. Danielson R. A dual approach to assessing collection development and acquisitions for academic libraries. Library Collections, Acquisitions, and Technical Services. 2012;36(3–4):84–96 Available from: http://dx.doi.org/10.1016/j.lcats.2012.09.002.
61. Davis K, Lei J, Neely C, Rykse H. Shared patron-driven acquisition within a consortium: The OCUL PDA Pilot. Serials Review. 2012;38(3):183–187 Available from: http://dx.doi.org/10.1016/j.serrev.2012.08.002.
62. Deeds LR. DIKTUON: Purchasing at the point of need: An acquisitions pilot project. Theological Librarianship. 2014;7(1):1–2 Retrieved from: <https://doaj.org/article/5261cfa31d91415f9dac5df9e2c262e9>.
63. De Fino M, Lo ML. New roads for patron-driven e-books: Collection development and technical services implications of a patron-driven acquisitions pilot at Rutgers. Journal of Electronic Resources Librarianship. 2011;23(4):327–338 Available from: http://dx.doi.org/10.1080/1941126X.2011.627043.
64. Dewland JC, See A. Patron driven acquisitions. Library Resources & Technical Services. 2015;59(1):13–23.
65. Dilevko J, Gottlieb L. Print sources in an electronic age: A vital part of the research process for undergraduate students. The Journal of Academic Librarianship. 2002;28(6):381–392 Available from: http://dx.doi.org/10.1016/S0099-1333(02)00341-5.
66. Dilevko J, Gottlieb L. Weed to achieve: A fundamental part of the public library mission? Library Collections, Acquisitions, and Technical Services. 2003;27(1):73–96 Available from: http://dx.doi.org/10.1016/S1464-9055(02)00308-1.
67. Dinkins D. Individual title requests in PDA collections. College & Research Libraries News. 2012;73(5):249–255.
68. Dinkins D, Kirkland LN, Poole Wald J. An uneasy but powerful alliance: Faculty use of e-books. International Journal of the Book. 2014;11(3):11–25.
69. Downey Kay. Technical services workflow for book jobber mediated demand driven ebook acquisitions. Technical Services Quarterly. 2014;31(1):1–12 Available from: http://dx.doi.org/10.1080/07317131.2014.844617.
70. Doyle G, Tucker C. Patron-driven acquisition-working collaboratively in a consortial environment: An interview with Greg Doyle. Collaborative Librarianship. 2011;3(4):212–216.
71. Duan S, Grace C. E-book purchasing: The Open University’s experience. Insights: The UKSG Journal. 2013;26:250–255 Available from: http://dx.doi.org/10.1629/2048-7754.100.
72. Dunn MJ, Murgai S. Buy, not borrow: Building a bridge to a patron-centric collection—A case study at the University of Tennessee at Chattanooga’s Lupton Library. Southeastern Librarian. 2014;62:10–18.
73. Ebrary. (2007). 2007 Global faculty E-book survey. Retrieved from: https://www.calvin.edu/~dsc8/documents/ebrary_faculty_survey_2007.pdf.
74. Emery J, Stone G. Investigation of new content. Library Technology Reports. 2013;49(2):10–15.
75. England M, Anderson R. Patron-driven acquisition of journal articles using ReadCube at the University of Utah. Insights: The UKSG Journal. 2013;26(3):267–271 Available from: http://dx.doi.org/10.1629/2048-7754.77.
76. England M, Jones P. Diversification of access pathways and the role of demand-driven acquisition: A case study at the University of Utah. Serials Librarian. 2014;66(1–4):96–105 Available from: http://dx.doi.org/10.1080/0361526X.2014.879012.
77. Esposito JJ, Walker K, Ehling T. PDA and the University Press. Journal of Scholarly Publishing. 2013;44(3):s1–s62.
78. Ferris K, Buck TH. An ethos of access: How a small academic library transformed its collection-building processes. Collection Management. 2014;39(2/3):127–144 Available from: http://dx.doi.org/10.1080/01462679.2014.900732.
79. Fischer, K.S., & Diaz, C. (2014). Four years of unmediated demand-driven acquisition and 5,000 e-books later: We gave ‘em what they wanted. In Proceedings of the Charleston Library Conference. Available from: http://dx.doi.org/10.5703/1288284315296.
80. Fischer KS, Wright M, Clatanoff K, Barton H, Shreeves E. Give ‘em what they want: A one-year study of unmediated patron-driven acquisition of e-books. College & Research Libraries. 2012;73(5):469–492.
81. Fisher ES, Kurt L, Gardner S. Exploring patron-driven access models for e-journals and e-books. Serials Librarian. 2012;62(1–4):164–168 Available from: http://dx.doi.org/10.1080/0361526X.2012.652913.
82. Force, O.C.B.T., Gammon, J., & O’Neill, E.T. (2011). OhioLINK OCLC collection and circulation analysis project. Retrieved from: http://www.oclc.org/research/publications/library/2011/2011-06r.html.
83. Foster, N.F. (2011). Participatory design of academic libraries. Retrieved from: http://www.clir.org/pubs/reports/pub155/pub155.pdf.
84. Freeman RS, Nixon JM, Ward SM. Indiana library directors’ perceptions of e-book patron-driven acquistions. Indiana Libraries. 2015;34(1):23–27.
85. Fry A. Conventional wisdom or faulty logic?. The Recent Literature on Monograph Use and E-book Acquisition Library Philosophy and Practice 2015; Paper 1307. Retrieved from: http://digitalcommons.unl.edu/libphilprac/1307.
86. Fulton KJ. The rise of patron-driven acquisitions: A literature review. Georgia Library Quarterly. 2014;51(3):22–30.
87. Futas E, Vidor DL. What constitutes a good collection? Library Journal. 1987;112(7):45–47.
88. Gee W, Shirkey C. Giving patrons what they want: An analysis of a thesis and dissertation purchase-on-demand project at East Carolina University. Journal of Interlibrary Loan, Document Delivery & Electronic Reserves. 2010;20(2):103–114 Available from: http://dx.doi.org/10.1080/10723031003694536.
89. Geiger, R. (2015). Impact of the financial crisis on higher education in the United States. International Higher Education (59). Retrieved from: http://ejournals.bc.edu/ojs/index.php/ihe/article/view/8486.
90. Gilbertson M, McKee EC, Salisbury L. Just in case or just in time? Outcomes of a 15-month patron-driven acquisition of e-books at the University of Arkansas Libraries. Library Collections, Acquisitions, & Technical Services. 2014;38(1/2):10–20 Available from: http://dx.doi.org/10.1080/14649055.2014.924072.
91. Glackin BC, Rodenhiser RW, Herzog B. A library and the disciplines: A collaborative project assessing the impact of eBooks and mobile devices on student learning. The Journal of Academic Librarianship. 2014;40(3):299–306.
92. Goedeken EA, Lawson K. The past, present, and future of demand-driven acquisitions in academic libraries. College & Research Libraries. 2015;76(2):205–221 Available from: http://dx.doi.org/10.5860/crl.76.2.205.
93. Gray DJ, Copeland AJ. E-book versus print: A per-title cost and use comparison of a public library’s popular titles. Reference & User Services Quarterly. 2012;51(4):334.
94. Hamaker, C. (2016, February 4). Charlotte initiative: Principles for permanent acquisition of ebooks for academic libraries [msg 1]. Message posted to LibLicense-L Discussion Forum, archived at http://listserv.crl.edu/wa.exe?A2=LIBLICENSE-L;9b8be2ee.1602.
95. Hartman-Caverly S, McColl A, Medeiros N, Persick M. A hard DDA’s night: Managing a consortial demand-driven acquisitions program for e-books. In: Bridges K, ed. Customer-based collection development: An overview. Chicago, IL: American Library Association; 2014;13–26.
96. Haugh DL. How do you like your books: Print or Digital? (Masters of Library and Information Science Masters Thesis) Queens College, City University of New York 2015.
97. Hedlund OM, Copeland A. Collection management and the budget crunch: Are we adequately preparing library students for current practices? Collection Building. 2013;32(4):128–132 Available from: http://dx.doi.org/10.1108/CB-03-2013-0012.
98. Herrera G. Deliver the eBooks your patrons and selectors both want! PDA program at the University of Mississippi. Serials Librarian. 2012;63(2):178–186 Available from: http://dx.doi.org/10.1080/0361526X.2012.700780.
99. Herrera G. Testing the patron-driven model: Availability analysis of first-time use books. Collection Management. 2015;40(1):3–16 Available from: http://dx.doi.org/10.1080/01462679.2014.965863.
100. Herrera G, Greenwood J. Patron-initiated purchasing: Evaluating criteria and workflows. Journal of Interlibrary Loan, Document Delivery & Electronic Reserves. 2011;21(1/2):9–24 Available from: http://dx.doi.org/10.1080/1072303X.2011.544602.
101. Hillen, C. and Johnson-Grau, G. (2011). Demand-driven success: Designing your PDA experiment. Proceedings of the Charleston Library Conference. Available from: http://dx.doi.org/10.5703/1288284314971.
102. Hillen, C., Johnson-Grau, G., & Thompson, J. (2014). Rebuilding the plane while flying: library/vendor strategies for approval plan revision (in a DDA World). In Proceedings of the Charleston Library Conference. Available from: http://dx.doi.org/10.5703/1288284315300.
103. Hodge, V., Manoff, M., & Watson, G. (2012, June). Struggles and solutions with providing access to e-Book collections. In Poster session presented at the NASIG Conference, Nashville, TN. Retrieved from: http://www.slideshare.net/NASIG/struggles-and-solutions-with-providing-access-to-ebook-collections.
104. Hodge V, Manoff M, Watson G. Providing access to E-Books and E-Book collections: Struggles and solutions. Serials Librarian. 2013;64(1–4):200–205 Available from: http://dx.doi.org/10.1080/0361526X.2013.760411.
105. Hodges D, Preston C, Hamilton MJ. Patron-initiated collection development: Progress of a paradigm shift. Collection Management. 2010;35(3–4):208–221.
106. Hole C. Click! The feminization of the public library. American Libraries. 1990;21(11):1076–1079.
107. Holley B. Random rambling—Why aren’t faculty complaining about academic librarics not buying books? Against the Grain. 2011;23(2):61–62.
108. Hoseth A, McLure M. Perspectives on 3-books from instructors and students in the social sciences. Reference & User Services Quarterly. 2012;51(3):278–288.
109. Hussong-Christian U, Goergen-Doll K. We’re listening: Using patron feedback to assess and enhance purchase on demand. Journal of Interlibrary Loan, Document Delivery & Electronic Reserves. 2010;20(5):319–335 Available from: http://dx.doi.org/10.1080/1072303X.2010.517420.
110. Hyams, R., & Har, K. (2016). You’ve done PDA, what about PDW?: Patron-driven weeding at the SUNY Maritime Library. In: Paper presented at the Metropolitan New York Library Council Conference, New York, NY.
111. Jensen K. Data-driven decisions for library liaisons: Exploring strategies for effectively managing diminishing monograph collections. Collection Management. 2012;37(1):9–22.
112. Johnson R. Purchasing options in parton-driven acquisitions. Against the Grain. 2011;23(3):14–16.
113. Jones D. On-demand information delivery: Integration of patron-driven acquisition into a comprehensive information delivery system. Journal of Library Administration. 2011;51(7/8):764–776 Available from: http://dx.doi.org/10.1080/01930826.2011.601275.
114. Jones PA. Libraries, immigrants, and the American experience Westport, CT: Greenwood Press; 1999.
115. Joyner Cramer C. All about demand-driven acquisition. The Serials Librarian. 2013;65(1):87–97.
116. Kelly G. A year of demand driven acquisition of ebooks at the open polytechnic library. New Zealand Library & Information Management Journal. 2010;52(1):41–54.
117. Kenney B. What we buy now. Publishers Weekly. 2013;260:18–19.
118. Kent A. Use of library materials: The University of Pittsburgh study New York, NY: M. Dekker; 1979.
119. Kieft B. A college library, its print monograph collection, and the new information ecology. Against the Grain. 2010;22(5):28–30.
120. King M, Nichols A, Hanson M. Pay per view article delivery at the University of Wisconsin-Stevens Point. Serials Librarian. 2011;60(1–4):223–228 Available from: http://dx.doi.org/10.1080/0361526X.2011.556038.
121. Knievel JE, Wicht H, Connaway LS. Use of circulation statistics and interlibrary loan data in collection management. College & Research Libraries. 2006;67(1):35–49.
122. Kwok CSY, Chan DLH, Cheung ASM, Wong MK. Demand-driven acquisition at HKUST library: The new normal. Interlending & Document Supply. 2014;42:153–158 Available from: http://dx.doi.org/10.1108/ILDS-09-2014-0046.
123. Lamothe AR. Factors influencing the usage of an electronic book collection: Size of the e-book collection, the student population, and the faculty population. College & Research Libraries. 2013;74(1):39–59.
124. Lamothe AR. Comparing usage between dynamic and static e-reference collections. Collection Building. 2015;34(3):78–88.
125. Langston M. The California State University E-book Pilot Project: Implications for cooperative collection development. Library Collections, Acquisitions, and Technical Services. 2003;27(1):19–32.
126. Lannon A, McKinnon D. Business e-books: What can be learned from vendor supplied statistics? Journal of Business & Finance Librarianship. 2013;18(2):89–99 Available from: http://dx.doi.org/10.1080/08963568.2013.767121.
127. Lener, E.F., & Brown, L. (2015). ILL as acquisitions: Implementing and integrating POD in a research library. In Proceedings of the Charleston Conference.
128. Levine-Clark M. Electronic book usage: A survey at the University of Denver. Portal: Libraries and the Academy. 2006;3:285.
129. Levine-Clark M. Electronic books and the humanities: A survey at the University of Denver. Collection Building. 2007;26(1):7–14.
130. Levine-clark M. Developing a multiformat demand-driven acquisition model. Collection Management. 2010;35(3/4):201 Available from: http://dx.doi.org/10.1080/01462679.2010.486965.
131. Levine-Clark M. Access to everything: Building the future academic library collection. Portal: Libraries and the Academy. 2014;3:425.
132. Levine-Clark M. E-book usage on a global scale: Patterns, trends and opportunities. Insights: The UKSG Journal. 2015;28(2):39–48 Available from: http://dx.doi.org/10.1629/uksg.240.
133. Levine-Clark M, Paulson K, Moeller P. 10,000 libraries, 4 years: A large-scale study of e-book usage and how you can use the data to move forward. Serials Librarian. 2015;68(1–4):262.
134. Lewis, D.W. (2015). The future of academic library materials expenditures: A thought experiment. Retrieved from: https://scholarworks.iupui.edu/handle/1805/6110.
135. Littman J, Connaway LS. A circulation analysis of print books and e-books in on academic research library. Library Resources and Technical Services. 2004;48(4):256–262.
136. Lowe RA, Aldana L. Implementation & management of a consortial demand-driven e-books pilot: The USAMAI experience. Journal of Electronic Resources Librarianship. 2015;27(3):185–193 Available from: http://dx.doi.org/10.1080/1941126X.2015.1059650.
137. Lundrigan C, Manuel K, Yan M. “Pretty rad”: Explorations in user satisfaction with a discovery layer at Ryerson University. College & Research Libraries. 2015;76(1):43–62.
138. Machovec G. Consortial ebook licensing for academic libraries. Journal of Library Administration. 2013;53(5/6):390–399 Available from: http://dx.doi.org/10.1080/01930826.2013.876833.
139. Machovec G, Harloe B, Hults P, Traub A. What’s the use of use?: Return on investment strategies for consortial DDA. Journal of Library Administration. 2015;55(3):249–259 Available from: http://dx.doi.org/10.1080/01930826.2015.1034055.
140. Macicak S, Schell LE. Patron-driven, librarian-approved: A pay per view model for e-books. Serials. 2009;22(3):S31–S38.
141. Malone CK. Toward a multicultural American public library history. Libraries & Culture 2000;77–87 Retrieved from: https://www.ischool.utexas.edu/~lcr/archive/fulltext/LandC_35_1_Malone.pdf.
142. Mangen A, Walgermo BR, Brønnick K. Reading linear texts on paper versus computer screen: Effects on reading comprehension. International Journal of Educational Research. 2013;58:61–68.
143. Mann T. The importance of books, free access, and libraries as places-and the dangerous inadequacy of the information science paradigm. Journal of Academic Librarianship. 2001;27(4):268.
144. Mays A. Biz of acq—An environmental analysis corroborating PDA and the Winthrop example. Against the Grain. 2012;24(2):64–67.
145. McCaslin D. Collection building through patrons: Caltech Library’s kindle program. Collection Management. 2013;38(3):172–191 Available from: http://dx.doi.org/10.1080/01462679.2013.792308.
146. McLure M, Hoseth A. Patron-driven e-book use and users’ e-book perceptions: A snapshot. Collection Building. 2012;31(4):136–147 Available from: http://dx.doi.org/10.1108/01604951211274043.
147. Medeiros N. Shaping a collection one electronic book at a time patron-driven acquisitions in academic libraries. OCLC Systems & Services. 2011;27(3):160–162 Available from: http://dx.doi.org/10.1108/10650751111164524.
148. Medlar, A., Murphy, D.M., & Sposato, S. (2014). The P-D-A of It: Chicago Public Library’s Patron-Driven Acquisitions Pilot, Part 1. Retrieved from: ALCTS Publications & Resources http://www.ala.org/alcts/resources/z687/cplpda1.
149. Miller, C.C., & Bosman, J. (2011, May 19). E-books outsell print books at Amazon, Financial report, p. 2. Retrieved from: http://www.nytimes.com/.
150. Miller W. Patron-driven acquisitions (PDA): The new wave in book acquisitions is coming (cover story). Library Issues. 2011;31(5):1–4.
151. Mizrachi D. Undergraduates’ academic reading format preferences and behaviors. The Journal of Academic Librarianship. 2015;41(3):301–311.
152. Moeller PD. Literature of acquisitions in review, 2010–11. Library Resources & Technical Services. 2013;57(2):87–99.
153. Mortimore JM. Access-informed collection development and the academic library: Using holdings, circulation, and ILL data to develop prescient collections. Collection Management. 2006;30(3):21–37 Available from: http://dx.doi.org/10.1300/J105v30n03_03.
154. Musser LR, Coopey BM. Impact of a discovery system on interlibrary loan. College & Research Libraries 2015; crl15-800. Advance Online Publication.
155. Nabe J, Imre A, Mann S. Let the patron drive: Purchase on demand of e-books. Serials Librarian. 2011;60(1–4):193–197 Available from: http://dx.doi.org/10.1080/0361526X.2011.556033.
156. Neujahr J. Lightning fast interlibrary loan using e-readers for on-demand delivery. College & Research Libraries News. 2011;72(9):531–541.
157. Neville R, Williams Iii J, Hunt CC. Faculty-library teamwork in book ordering. College and Research Libraries. 1998;59(6):524–533.
158. NISO D.D.A. Working Group. (2014). Demand driven acquisition of monographs: A recommended practice of the National Information Standards Organization. Retrieved from: http://www.niso.org/apps/group_public/download.php/13373/rp-20-2014_DDA.pdf.
159. Nixon JM, Freeman RS, Ward SM. Patron-driven acquisitions: An introduction and literature review. Collection Management. 2010;35(3/4):119 Available from: http://dx.doi.org/10.1080/01462679.2010.486957.
160. Olney-Zide M, Eiford L. Confessions of a late bloomer: Use and acceptance of an e-books program in an undergraduate library. The Serials Librarian. 2015;68(1–4):307–317.
161. Peltier S, Moreau F. Internet and the ‘Long tail versus superstar effect’ debate: Evidence from the French book market. Applied Economics Letters. 2012;19(8):711–715.
162. Perdue J, Fleet JAV. Borrow or buy? Cost-effective delivery of monographs. Journal of Interlibrary Loan, Document Delivery & Information Supply. 1999;9(4):19–28.
163. Peters T. Some issues for collection developers and content managers. Collection Management. 2000;25:137–153.
164. Porion A, Aparicio X, Megalakaki O, Robert A, Baccino T. The impact of paper-based versus computerized presentation on text comprehension and memorization. Computers in Human Behavior. 2016;54:569–576.
165. Price J. Patron-driven acquisition of publisher-hosted content: Bypassing DRM. Against the Grain. 2011;23(3):16–20.
166. Price J, McDonald J. Beguiled by Bananas: A Retrospective Study of the Usage & Breadth of Patron vs Librarian Acquired EBook Collections. Proceedings of the Charleston Library Conference 2009; Available from: http://dx.doi.org/10.5703/1288284314741.
167. Proctor J. Avoiding ebook “big deals”: Alternatives to ebook backlists. New Library World. 2013;114(7/8):301–307 Available from: http://dx.doi.org/10.1108/NLW-02-2013-0018.
168. Quint, B. (2014). Deja vu all over again: NISO’s DDA report, 8.
169. Radnor MC, Shrauger KJ. Ebook resource sharing models: Borrow, buy, or rent. Journal of Interlibrary Loan, Document Delivery & Electronic Reserves. 2012;22(3/4):155–161 Available from: http://dx.doi.org/10.1080/1072303X.2012.728186.
170. Ramirez D, Tabacaru S. Evidence-based collection management: A discipline-specific usage analysis of PsycBOOKS. Collection Management. 2015;40(3):163–184.
171. Rawlinson N. Give ‘em what they want!. Library Journal. 1981;106(20):2188.
172. Richardson J. The Arizona Universities Library Consortium patron-driven e-book model. Insights: The UKSG Journal. 2013;26(1):66–69 Available from: http://dx.doi.org/10.1629/2048-7754.26.1.66.
173. Riley JD. Library marketplace—Patron driven acquisitions from the point of view of a traditional vendor. Against the Grain. 2010;22(5):78–79.
174. Roberts M, Cameron KJ. A barometer of “unmet demand”. Library Acquisitions: Practice & Theory. 1984;8(1):31–42 Available from: http://dx.doi.org/10.1016/0364-6408(84)90051-6.
175. Roll, A. (2014). A demand-driven-preferred approval plan. In Proceedings of the Charleston Library Conference. Available from: http://dx.doi.org/10.5703/1288284315304.
176. Roll A. Both just-in-time and just-in-case. Library Resources & Technical Services. 2016;60(1):4–11.
177. Rose-Wiles LM. Are print books dead? An investigation of book circulation at a mid-sized academic library. Technical Services Quarterly. 2013;30(2):129–152 Available from: http://dx.doi.org/10.1080/07317131.2013.759496.
178. Rossmann D, Arlitsch K. From acquisitions to access: The changing nature of library budgeting. Journal of Library Administration. 2015;55(5):394–404.
179. Rowlands I, Nicholas D, Jamali HR, Huntington P. What do faculty and students really think about e-books? Aslib Proceedings. 2007;59(6):489–511 Available from: http://dx.doi.org/10.1108/00012530710839588.
180. Schomberg J, Grace M. Expanding a collection to reflect diverse user populations. Collection Building. 2005;24(4):124–126.
181. Schonfeld RC, Houswright R. US faculty survey 2012 New York, NY: Ithaka; 2013; Retrieved from: http://www.sr.ithaka.org/publications/us-faculty-survey-2012/.
182. School Library Journal. (2014). Ebook usage in US public libraries. Retrieved from: https://s3.amazonaws.com/WebVault/ebooks/LJSLJ_EbookUsage_PublicLibraries_2014.pdf.
183. Schroeder R. When patrons call the shots: Patron-driven acquisition at Brigham Young University. Collection Building. 2012;31(1):11–14 Available from: http://dx.doi.org/10.1108/01604951211199128.
184. Schroeder, R., Wright, T., & Murdoch, R. (2010, 2011/11//). Patron-driven acquisitions: The future of collection development? In Proceedings of the Charleston Library Conference. Available from: http://dx.doi.org/10.5703/128828431434.
185. Scott, K., Dooley, J., & Hruska, M. (2014). Collective collection building and DDA. In Proceedings of the Charleston Library Conference. Available from: http://dx.doi.org/10.5703/1288284315306.
186. Seger R, Allen L. A publisher’s perspective on PDA. Against the Grain. 2011;23(3):32–34.
187. Sens J-M, Fonseca AJ. A Skeptic’s view of patron-driven acquisitions: Is it time to ask the tough questions? Technical Services Quarterly. 2013;30(4):359–371 Available from: http://dx.doi.org/10.1080/07317131.2013.818499.
188. Sharp S, Thompson S. ‘Just in case’ vs ‘Just in time’: E-book purchasing models. Serials. 2010;23(3):201–206.
189. Shen L, Cassidy ED, Elmore E, et al. Head first into the patron-driven acquisition pool: A comparison of librarian selections versus patron purchases. Journal of Electronic Resources Librarianship. 2011;23(3):203–218 Available from: http://dx.doi.org/10.1080/1941126X.2011.601224.
190. Shepherd J, Langston M. Shared patron driven acquisition of e-books in the California State University Library Consortium. Library Collections, Acquisitions, & Technical Services. 2013;37(1/2):34–41 Available from: http://dx.doi.org/10.1016/j.lcats.2013.08.001.
191. Simon C. Just the facts: An examination of e-book usage by business students and faculty. Reference Librarian. 2011;52(3):263–273 Available from: http://dx.doi.org/10.1080/02763877.2011.556561.
192. Spitzform P. Patron-driven acquisition: Collecting as if money and space mean something. Against the Grain. 2011;23(3):20–24.
193. Sprague N, Hunter B. Assessing e-books: Taking a closer look at e-book statistics. Library Collections, Acquisitions and Technical Services. 2008;32:150–157 Available from: http://dx.doi.org/10.1016/j.lcats.2008.12.005.
194. Stetson University. (2011). Fact book 2010–2011. Retrieved from: http://www.stetson.edu/administration/institutional-research/media/fact-book-2010-2011.pdf.
195. Stone G, Heyhoepullar B. The customer is always right? Assessing the value of patron-driven acquisition at the University of Huddersfield. Insights: The UKSG Journal. 2015;28(1):22–31.
196. Stovall, C., Lener, E., & Gilmore, T. (2014). Redesigning workflows and implementing demand-driven acquisition at Virginia Tech: One year later. In Proceedings of the Charleston Library Conference. Available from: http://dx.doi.org/10.5703/1288284315307.
197. Trueswell RL. Some behavioral patterns of library users: The 80/20 rule. Wilson Library Bulletin. 1969;43(5):458–461.
198. Tyler DC, Falci C, Melvin JC, Epp M, Kreps AM. Patron-driven acquisition and circulation at an academic library: Interaction effects and circulation performance of print books acquired via librarians’ orders, approval plans, and patrons’ interlibrary loan requests. Collection Management. 2013;38(1):3–32 Available from: http://dx.doi.org/10.1080/01462679.2012.730494.
199. Tyler DC, Melvin JC, Yang X, Epp M, Kreps AM. Effective selectors? Interlibrary loan patrons as monograph purchasers: A comparative examination of price and circulation-related performance. Journal of Interlibrary Loan, Document Delivery & Electronic Reserves. 2011;21(1/2):57–90 Available from: http://dx.doi.org/10.1080/1072303X.2011.557322.
200. Tyler DC, Xu Y, Melvin JC, Epp M, Kreps AM. Just how right are the customers? An analysis of the relative performance of patron-initiated interlibrary loan monograph purchases. Collection Management. 2010;35(3–4):162–179.
201. Tynan M, McCarney E. “Click here to order this book”: A case study of print and electronic patron-driven acquisition in University College Dublin. New Review of Academic Librarianship. 2014;20(2):233–250 Available from: http://dx.doi.org/10.1080/13614533.2014.906352.
202. University of Vermont Office of Institutiona Research. (2010). Fall 2010 enrollment report. Retrieved from: http://www.uvm.edu/~oir/f2010enr/f2010eh.pdf.
203. Urbano C, Zhang Y, Downey K, Klingler T. Library catalog log analysis in e-book patron-driven acquisitions (PDA): A case study. College & Research Libraries. 2015;76:412–426 Available from: http://dx.doi.org/10.5860/crl.76.4.412.
204. van Dyk G. Interlibrary loan purchase-on-demand: A misleading literature. Library Collections, Acquisitions, & Technical Services. 2011;35(2/3):83–89 Available from: http://dx.doi.org/10.1016/j.lcats.2011.04.001.
205. Van Dyk G. Demand-driven acquisitions for print books: How holds can help as much as interlibrary loan. Journal of Access Services. 2014;11(4):298–308 Available from: http://dx.doi.org/10.1080/15367967.2014.945120.
206. Vermeer WC. Evolving technical services workflows in a demand-driven acquisitions pilot. The Serials Librarian. 2015;69(3–4):298–309.
207. Walker K, Entlich R, Green G, et al. Report of the collection development executive committee task force on print collection usage. 22 Ithaca, NY: Cornell University Library; 2010;s55.
208. Waller JH. Undergrads as selectors: Assessing patron-driven acquisition at a Liberal Arts College. Journal of Interlibrary Loan, Document Delivery & Electronic Reserves. 2013;23(3):127–148 Available from: http://dx.doi.org/10.1080/1072303X.2013.851052.
209. Walters WH. Patron-driven acquisition and the educational mission of the academic library. Library Resources & Technical Services. 2012;56(3):199–213.
210. Walters WH. E-books in academic libraries: Challenges for acquisition and collection management. Journal of Librarianship and Information Science. 2014;46(2):85–95 Available from: http://dx.doi.org/10.1177/0961000612470279.
211. Walton EW. Why undergraduate students choose to use e-books. Journal of Librarianship and Information Science. 2014;46(4):263–270 Available from: http://dx.doi.org/10.1177/0961000613488124.
212. Ward SM. Books on demand: Just-in-time acquisitions. Acquisitions Librarian. 2002;14(27):95.
213. Ward SM, Wray T, Debus-López KE. Collection development based on patron requests: Collaboration between interlibrary loan and acquisitions. Library Collections, Acquisitions, & Technical Services. 2003;27(2):203–213 Available from: http://dx.doi.org/10.1080/14649055.2003.10765918.
214. Way D. The assessment of patron-initiated collection development via interlibrary loan at a comprehensive university. Journal of Interlibrary Loan, Document Delivery & Electronic Reserves. 2009;19(4):299–308 Available from: http://dx.doi.org/10.1080/10723030903278374.
215. Way D, Garrison J. Financial implications of demand-driven acquisitions: A case study of the value of short-term loans. In: Swords D, ed. Patron-driven Acquisitions History and Best Practices. Berlin: Walter De Gruyter; 2011;137–156.
216. Wenger CB, Sweet CB, Stiles HJ. Monograph evaluation for acquisitions in a large research library. Journal of the American Society for Information Science. 1979;30(2):88–92.
217. Wen-ying L, Chambers MB. PDA consortium style. Library Resources & Technical Services. 2013;57(3):164–178.
218. Wical SH, Kishel HF. Strategic collection management through statistical analysis. The Serials Librarian. 2013;64(1–4):171–187.
219. Wiegand WA. Tunnel vision and blind spots: What the past tells us about the present; Reflections on the twentieth-century history of American librarianship. The Library Quarterly 1999;1–32.
220. Yin Z, Downey K, Urbano C, Klingler T. A scenario analysis of demand-driven acquisition (DDA) of e-books in libraries. Library Resources & Technical Services. 2015;59(2):84–93.
221. Yu Q, Wang X, Yang F. Patron driven acquisitions via mobile crowd sensing. Paper presented at the 3rd International Conference on Material, Mechanical and Manufacturing Engineering (IC3ME 2015), Guangzhou, China Amsterdam: Atlantis Press; 2015.
222. Zielinska M. Public library services to Canadian ethnocultural communities: An overview. Library Trends. 1980;29(2):275–292.
223. Zopfi-Jordan D. Purchasing or borrowing: Making interlibrary loan decisions that enhance patron satisfaction. Journal of Interlibrary Loan, Document Delivery & Electronic Reserves. 2008;18(3):387–394 Available from: http://dx.doi.org/10.1080/10723030802186447.
