APA (7th ed.) Citation

World Population Conference (2nd : 1965 : Belgrade) & United Nations. Department of Economic and Social Affairs. (1966). Proceedings. United Nations.

Chicago Style (17th ed.) Citation

World Population Conference (2nd : 1965 : Belgrade) and United Nations. Department of Economic and Social Affairs. Proceedings. New York: United Nations, 1966.

MLA (9th ed.) Citation

World Population Conference (2nd : 1965 : Belgrade) and United Nations. Department of Economic and Social Affairs. Proceedings. United Nations, 1966.