APA aipamena

 Heerkens, G. (2014).  Project management.  Mc Graw Hill.

Chicago Style aipamena

 Heerkens, Gary.  Project Management.  Mc Graw Hill, 2014.

MLA aipamena

 Heerkens, Gary.  Project Management.  Mc Graw Hill, 2014.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.