APA (7th ed.) Citation

(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 Style (17th ed.) Citation

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 (9th ed.) Citation

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.