(1997). Medical methods for termination of pregnancy: Report of a WHO scientific group. World Health Organization.
Chicago-Zitierstil (17. Ausg.)Medical Methods for Termination of Pregnancy: Report of a WHO Scientific Group. Geneva: World Health Organization, 1997.
MLA-Zitierstil (9. Ausg.)Medical Methods for Termination of Pregnancy: Report of a WHO Scientific Group. World Health Organization, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.