APA (7th ed.) Zitazioa
Levine, C. (1993). Taking sides: Clashing views on controversial bioethical issues (5th ed.). Dushkin.
Chicago Style (17th ed.) Zitazioa
Levine, Carol. Taking Sides: Clashing Views on Controversial Bioethical Issues. 5th ed. Connecticut: Dushkin, 1993.
MLA (9th ed.) Zitazioa
Levine, Carol. Taking Sides: Clashing Views on Controversial Bioethical Issues. 5th ed. Dushkin, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.