APA (7e ed.) Bronvermelding

KOONTZ H. (1986). ESSENTIALS OF MANAGEMENT. MCGRAW-HILL.

Chicago (17e ed.) Bronvermelding

KOONTZ H. ESSENTIALS OF MANAGEMENT. NEW YORK: MCGRAW-HILL, 1986.

MLA (9e ed.) Bronvermelding

KOONTZ H. ESSENTIALS OF MANAGEMENT. MCGRAW-HILL, 1986.