World Health Organization. (1982). Injectable hormonal contraceptives: Technical and safety aspects. WHO offset publication.
Chicago-Zitierstil (17. Ausg.)World Health Organization. "Injectable Hormonal Contraceptives: Technical and Safety Aspects." WHO Offset Publication 1982.
MLA-Zitierstil (8. Ausg.)World Health Organization. "Injectable Hormonal Contraceptives: Technical and Safety Aspects." WHO Offset Publication, 1982.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.