Citazione Stile APA (7a Edizione)

Koontz, H., O'Donnell, C., & Weihrich, H. (1986). Essentials of management (4th ed.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Koontz, Harold, Cyril O'Donnell, e Heinz Weihrich. Essentials of Management. 4th ed. New York: McGraw-Hill, 1986.

Citatione MLA (8a ed.)

Koontz, Harold, et al. Essentials of Management. 4th ed. McGraw-Hill, 1986.