Dyfyniad APA

Project Management Institute. (2021). A Guide to the Project Management Body of Knowledge (7th.). Project Management Institute.

Dyfyniad Arddull Chicago

Project Management Institute. A Guide to the Project Management Body of Knowledge. 7th. USA: Project Management Institute, 2021.

Dyfyniad MLA

Project Management Institute. A Guide to the Project Management Body of Knowledge. 7th. Project Management Institute, 2021.

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