APA (7th ed.) Citation

Project Management Institute. (2009). A guide to the project management body of knowledge: PMBOK guide (4a. ed.). Project Management Institute.

Chicago Style (17th ed.) Citation

Project Management Institute. A Guide to the Project Management Body of Knowledge: PMBOK Guide. 4a. ed. Delaware Water Gap: Project Management Institute, 2009.

MLA (9th ed.) Citation

Project Management Institute. A Guide to the Project Management Body of Knowledge: PMBOK Guide. 4a. ed. Project Management Institute, 2009.