APA استشهاد

Smith, P. (1976). Food Production and its Consequences (2n ed.). California, Cunnings.

استشهاد بنمط شيكاغو

Smith, Philip. Food Production and Its Consequences. 2n ed. Menlopark: California, Cunnings, 1976.

MLA استشهاد

Smith, Philip. Food Production and Its Consequences. 2n ed. California, Cunnings, 1976.