Weltgesundheitsorganisation. (1971). Methods of fertility regulation: advances in research and clinical experience: Report of a WHO scientific group. Technical report series / World Health Organization.
Chicago-Zitierstil (17. Ausg.)Weltgesundheitsorganisation. "Methods of Fertility Regulation: Advances in Research and Clinical Experience: Report of a WHO Scientific Group." Technical Report Series / World Health Organization 1971.
MLA-Zitierstil (8. Ausg.)Weltgesundheitsorganisation. "Methods of Fertility Regulation: Advances in Research and Clinical Experience: Report of a WHO Scientific Group." Technical Report Series / World Health Organization, 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.