APA (7th ed.) Zitazioa

Obstetrics, Gynaecology and Reproductive Medicine. Cambridge University Press.

Chicago Style (17th ed.) Zitazioa

Obstetrics, Gynaecology and Reproductive Medicine. Cambridge University Press.

MLA (9th ed.) Zitazioa

Obstetrics, Gynaecology and Reproductive Medicine. Cambridge University Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.