APA (7th ed.) Zitazioa

keeton,. (1980). Biological science (3rd ed.). Norton.

Chicago Style (17th ed.) Zitazioa

keeton. Biological Science. 3rd ed. New York: Norton, 1980.

MLA (9th ed.) Zitazioa

keeton. Biological Science. 3rd ed. Norton, 1980.