Gaya APA

Koontz, H., O'Donnell, C. (1959). Principles of management: an analysis of managerial function (2nd ed.). New York: McGraw-Hill Book Company.

Gaya MLA

Koontz, Harorld., O'Donnell, Cyril. "Principles of management: an analysis of managerial function". 2nd ed. New York: McGraw-Hill Book Company, 1959. Text.