APA aipamena

 Angel, G. G. (2010).  PMP certification: A beginner’s guide.  McGraw-Hill.

Chicago Style aipamena

 Angel, George G.  PMP Certification: A Beginner’s Guide.  McGraw-Hill, 2010.

MLA aipamena

 Angel, George G.  PMP Certification: A Beginner’s Guide.  McGraw-Hill, 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.