Παραπομπή APA

Guder, R. (1970). Supervisory management. A.M.A.INC.

Παραπομπή Chicago Style

Guder, R.F. Supervisory Management. New York: A.M.A.INC, 1970.

Παραπομπή MLA

Guder, R.F. Supervisory Management. A.M.A.INC, 1970.