APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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