APA (7th ed.) Zitazioa
Jackson, J. D. (1989). Biology encounters (3rd.ed.). Burgress International.
Chicago Style (17th ed.) Zitazioa
Jackson, John D. Biology Encounters. 3rd.ed. Edina: Burgress International, 1989.
MLA (9th ed.) Zitazioa
Jackson, John D. Biology Encounters. 3rd.ed. Burgress International, 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.