Gaya APA
Koontz, H., Ridwan, M. (1972).
Prinsip prinsip management. Jilid I Principles of management. (1972).
:
Jakarta : Bhratara,.
Gaya MLA
Koontz, Harold., Ridwan, M..
"Prinsip prinsip management. Jilid I Principles of management.".
1972
:
Jakarta : Bhratara,,
1972.
Text.