Cita APA (7a ed.)
Obstetrics and gynecology [Obstet Gynecol] NLMUID: 0401101.
Cita Chicago Style (17a ed.)
Obstetrics and Gynecology [Obstet Gynecol] NLMUID: 0401101.
Cita MLA (9a ed.)
Obstetrics and Gynecology [Obstet Gynecol] NLMUID: 0401101.
警告：这些引文格式不一定是100％准确.