APA استشهاد

Koontz, H. (1978). Essentials of management/2e (2nd ed.). McGraw Hill.

استشهاد بنمط شيكاغو

Koontz, Harold. Essentials of Management/2e. 2nd ed. New Delhi: McGraw Hill, 1978.

MLA استشهاد

Koontz, Harold. Essentials of Management/2e. 2nd ed. McGraw Hill, 1978.