United Nations. Department of International Economic and Social Affairs. (1989). Global estimates and projections of population by sex and age. United Nations.
Chicago Style (17th ed.) CitationUnited Nations. Department of International Economic and Social Affairs. Global Estimates and Projections of Population by Sex and Age. New York: United Nations, 1989.
MLA (8th ed.) CitationUnited Nations. Department of International Economic and Social Affairs. Global Estimates and Projections of Population by Sex and Age. United Nations, 1989.
Warning: These citations may not always be 100% accurate.