(1998). Cardiovascular disease and steroid hormone contraception: Report of a WHO scientific group. World Health Organization.
Chicago-Zitierstil (17. Ausg.)Cardiovascular Disease and Steroid Hormone Contraception: Report of a WHO Scientific Group. Geneva: World Health Organization, 1998.
MLA-Zitierstil (9. Ausg.)Cardiovascular Disease and Steroid Hormone Contraception: Report of a WHO Scientific Group. World Health Organization, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.