APA (7th ed.) Zitazioa

Smith, R. L. (1995). Ecology and field biology (5th ed.). Harper Collins.

Chicago Style (17th ed.) Zitazioa

Smith, Robert Leo. Ecology and Field Biology. 5th ed. New York: Harper Collins, 1995.

MLA (9th ed.) Zitazioa

Smith, Robert Leo. Ecology and Field Biology. 5th ed. Harper Collins, 1995.