APA aipamena

Helga Kuhse & Peter Singer. (2012). A companion to bioethics (2.). Wiley Blackwell.

Chicago Style aipamena

Helga Kuhse and Peter Singer. A Companion to Bioethics. 2. West Sussex: Wiley Blackwell, 2012.

MLA aipamena

Helga Kuhse and Peter Singer. A Companion to Bioethics. 2. Wiley Blackwell, 2012.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.