APA استشهاد

Gardner, E. J. (1972). Principles of genetics (4th ed.). Wiley Eastern.

استشهاد بنمط شيكاغو

Gardner, Eldon J. Principles of Genetics. 4th ed. New York: Wiley Eastern, 1972.

MLA استشهاد

Gardner, Eldon J. Principles of Genetics. 4th ed. Wiley Eastern, 1972.