Gaya APA

GRAY, C, F., LARSON, E, W. (2006). Project Manajement The Managerial Process (3). USA: McGraw Hill International Edition.

Gaya MLA

GRAY, CLIFFORD, F.., LARSON, ERIK, W.. "Project Manajement The Managerial Process". 3 USA: McGraw Hill International Edition, 2006. Text.