APA استشهاد

Villee, C. (1961). Biology.3rd ed (3rd ed.). Tuttle.

استشهاد بنمط شيكاغو

Villee, Claude. Biology.3rd Ed. 3rd ed. Tokyo: Tuttle, 1961.

MLA استشهاد

Villee, Claude. Biology.3rd Ed. 3rd ed. Tuttle, 1961.