APA (7th ed.) Zitazioa
Singapore journal of obstetrics & gynaecology [Singapore J Obstet Gynecol] NLMUID: 8010992.
Chicago Style (17th ed.) Zitazioa
Singapore Journal of Obstetrics & Gynaecology [Singapore J Obstet Gynecol] NLMUID: 8010992.
MLA (9th ed.) Zitazioa
Singapore Journal of Obstetrics & Gynaecology [Singapore J Obstet Gynecol] NLMUID: 8010992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.