Παραπομπή APA

Abrahamsen, M. A. (1976). Co-operative business enterprise. Mc Grow Hill.

Παραπομπή Chicago Style

Abrahamsen, Martin A. Co-operative Business Enterprise. New York: Mc Grow Hill, 1976.

Παραπομπή MLA

Abrahamsen, Martin A. Co-operative Business Enterprise. Mc Grow Hill, 1976.