Koontz, H., O'Donnell, C., & Weihrich, H. (1988). Essentials of management (4th ed.). New York: McGraw-Hill Book Company.
Παραπομπή Chicago StyleKoontz, Harold, Cyril O'Donnell, and Heinz Weihrich. Essentials of Management. 4th ed. New York: McGraw-Hill Book Company, 1988.
Παραπομπή MLAKoontz, Harold, Cyril O'Donnell, and Heinz Weihrich. Essentials of Management. 4th ed. New York: McGraw-Hill Book Company, 1988.
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