Gaya APA

Heerkenns, G, R., J, I. (2005). Project Management : 24 Lessons to Help You Master Any Project . New York: Mcgraw Hill Companies, INC.

Gaya MLA

Heerkenns, Gary, R., J, I.. "Project Management : 24 Lessons to Help You Master Any Project". New York: Mcgraw Hill Companies, INC, 2005. Text.