Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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