Não informado. (1989). Current Opinion in Obstetrics and Gynecology. Rapid Science Publishers.
Chicago-Zitierstil (17. Ausg.)Não informado. Current Opinion in Obstetrics and Gynecology. London: Rapid Science Publishers, 1989.
MLA-Zitierstil (8. Ausg.)Não informado. Current Opinion in Obstetrics and Gynecology. Rapid Science Publishers, 1989.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.