Cita APA (7th ed.)

KOONTZ HAROLD. (1990). ESSENTIALS OF MANAGEMENT (5.). MCGRAW-HILL.

Cita Chicago (17th ed.)

KOONTZ HAROLD. ESSENTIALS OF MANAGEMENT. 5. NEW YORK: MCGRAW-HILL, 1990.

Cita MLA (9th ed.)

KOONTZ HAROLD. ESSENTIALS OF MANAGEMENT. 5. MCGRAW-HILL, 1990.