APA (7th ed.) Citation

United Nations. Department of International Economic and Social Affairs. Population Division. (1991). World population prospects 1990. United Nations.

Chicago Style (17th ed.) Citation

United Nations. Department of International Economic and Social Affairs. Population Division. World Population Prospects 1990. New York: United Nations, 1991.

MLA (9th ed.) Citation

United Nations. Department of International Economic and Social Affairs. Population Division. World Population Prospects 1990. United Nations, 1991.

Warning: These citations may not always be 100% accurate.