APA (7th ed.) Zitazioa

Enger, E. D. (1997). Concepts in Biology (10th ed.). McGraw-Hill Higher.

Chicago Style (17th ed.) Zitazioa

Enger, Eldon D. Concepts in Biology. 10th ed. New York: McGraw-Hill Higher, 1997.

MLA (9th ed.) Zitazioa

Enger, Eldon D. Concepts in Biology. 10th ed. McGraw-Hill Higher, 1997.