Cita APA (7th ed.)

Koontz, H. (1998). Essentials of management-5th ed (5th.).

Cita Chicago (17th ed.)

Koontz, Harold. Essentials of Management-5th Ed. 5th. New Delhi, 1998.

Cita MLA (9th ed.)

Koontz, Harold. Essentials of Management-5th Ed. 5th. 1998.