APA (7th ed.) Zitazioa
ebrary, Inc, & Berghella, V. (2010). Preterm birth: Prevention and management. Wiley-Blackwell.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, eta Vincenzo Berghella. Preterm Birth: Prevention and Management. Chichester, West Sussex ; Hoboken, NJ: Wiley-Blackwell, 2010.
MLA (9th ed.) Zitazioa
ebrary, Inc, eta Vincenzo Berghella. Preterm Birth: Prevention and Management. Wiley-Blackwell, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.