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[2]Project Management Institute. 2017. The Standard for Portfolio Management – Fourth Edition. Newtown Square, PA: Author.
[3]Project Management Institute. 2017. The Standard for Program Management – Fourth Edition. Newtown Square, PA: Author.
[4]Project Management Institute. 2017. A Guide to the Project Management Body of Knowledge (PMBOK® Guide) – Sixth Edition. Newtown Square, PA: Author.
[5]Project Management Institute. 2014. Navigating Complexity: A Practice Guide. Newtown Square, PA: Author.