APA استشهاد

Gulland, J. A. (1977). Fish population dynamics. John wiley and sons.

استشهاد بنمط شيكاغو

Gulland, J A. Fish Population Dynamics. New York: John wiley and sons, 1977.

MLA استشهاد

Gulland, J A. Fish Population Dynamics. John wiley and sons, 1977.