Citazione APA

Koontz, H., Harold koontz, & Cyril O Donnel. (1974). Essentials of management. Mc graw hill.

Stile di citazione Chicago

Koontz, Harold, Harold koontz, e Cyril O Donnel. Essentials of Management. New york: Mc graw hill, 1974.

Citazione MLA

Koontz, Harold, et al. Essentials of Management. Mc graw hill, 1974.