APA (7th ed.) Zitazioa

Smith, R. L. (1995). Ecology and Field Biology. HarperCollins College Publishers.

Chicago Style (17th ed.) Zitazioa

Smith, Robert Leo. Ecology and Field Biology. New York: HarperCollins College Publishers, 1995.

MLA (9th ed.) Zitazioa

Smith, Robert Leo. Ecology and Field Biology. HarperCollins College Publishers, 1995.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.