World Population Conference, Belgrad, 1965, & World Population Conference, Belgrade, 1965. (1966). World population: Challenge to development. United Nations Publication.
Chicago Style (17th ed.) CitationWorld Population Conference, Belgrad, 1965, and Belgrade World Population Conference. World Population: Challenge to Development. New York: United Nations Publication, 1966.
MLA (9th ed.) CitationWorld Population Conference, Belgrad, 1965, and Belgrade World Population Conference. World Population: Challenge to Development. United Nations Publication, 1966.
Warning: These citations may not always be 100% accurate.