Παραπομπή APA

Cooper, A. M. (1958). How to supervise people/4e (4th ed.). Mcgraw Hill.

Παραπομπή Chicago Style

Cooper, Alfred M. How to Supervise People/4e. 4th ed. New York: Mcgraw Hill, 1958.

Παραπομπή MLA

Cooper, Alfred M. How to Supervise People/4e. 4th ed. Mcgraw Hill, 1958.