Koontz, H., O'Donnell, C., & Weihrich, H. (1982). Essentials of management (3rd ed.). National Book Store.
Chicago Style (17th ed.) CitationKoontz, Harold, Cyril O'Donnell, and Heinz Weihrich. Essentials of Management. 3rd ed. Manila: National Book Store, 1982.
MLA (9th ed.) CitationKoontz, Harold, et al. Essentials of Management. 3rd ed. National Book Store, 1982.
Warning: These citations may not always be 100% accurate.