APA aipamena

Heerkens, G. (2002). Project management. New York: McGraw-Hill.

Chicago Style aipamena

Heerkens, Gary. Project Management. New York: McGraw-Hill, 2002.

MLA aipamena

Heerkens, Gary. Project Management. New York: McGraw-Hill, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.