(1981). Variations in the incidence of knowledge and use of contraception: A comparative analysis of world fertility survey results for twenty developing countries. United Nations.
Chicago-Zitierstil (17. Ausg.)Variations in the Incidence of Knowledge and Use of Contraception: A Comparative Analysis of World Fertility Survey Results for Twenty Developing Countries. New York: United Nations, 1981.
MLA-Zitierstil (9. Ausg.)Variations in the Incidence of Knowledge and Use of Contraception: A Comparative Analysis of World Fertility Survey Results for Twenty Developing Countries. United Nations, 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.