Project Management Institute. (2017). A Guide to the Project Management Body of Knowledge (PMBOK® Guide)–Sixth Edition: Vol. Sixth edition. Project Management Institute. PMBOK identified elements for developing a Project Management Plan. (Read 4.2 to 4.2.3.1)
Diab, P. (1998). Strategic planning + project management = competitive advantage. PM Network, 12(7), 25–28. Strategic planning when it involves project management is great way to create competitive advantage.