Παραπομπή σε μορφή APA (7η εκδ.)

United nations. (2013). A Guide to the Project Management Body of Knowledge project management institute (5.). library of Congress.

Παραπομπή σε μορφή Chicago (17η εκδ.)

United nations. A Guide to the Project Management Body of Knowledge Project Management Institute. 5. United States of America: library of Congress, 2013.

Παραπομπή σε μορφή MLA (9th εκδ.)

United nations. A Guide to the Project Management Body of Knowledge Project Management Institute. 5. library of Congress, 2013.