Cita APA (7a ed.)
Obstetrics & Gynecology (Ovid).
Cita Chicago Style (17a ed.)
Obstetrics & Gynecology (Ovid).
Cita MLA (9a ed.)
Obstetrics & Gynecology (Ovid).
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.