Cita APA (7a ed.)
American College of Obstetricians and Gynecologists. Obstetrics and gynecology. Elsevier.
Cita Chicago Style (17a ed.)
American College of Obstetricians and Gynecologists. Obstetrics and Gynecology. New York: Elsevier.
Cita MLA (9a ed.)
American College of Obstetricians and Gynecologists. Obstetrics and Gynecology. Elsevier.
Precaución: Estas citas no son 100% exactas.