Gaya APA

Koontz, H., Donnell, C, O. (1959). Principles of Management : An Analysis of Managerial Function 2'nd Ed. . New York: McGraw Hill Company.

Gaya MLA

Koontz, Harold., Donnell, Cyril, O'. "Principles of Management : An Analysis of Managerial Function 2'nd Ed.". New York: McGraw Hill Company, 1959. Text.