APA
United Nations. Department of International Economic and Social Affairs, . (1985). World population prospects. New York: United Nations.
Chicago
United Nations. Department of International Economic and Social Affairs, . 1985. World population prospects. New York: United Nations.
Harvard
United Nations. Department of International Economic and Social Affairs, . (1985). World population prospects. New York: United Nations.
MLA
United Nations. Department of International Economic and Social Affairs, . World population prospects. New York: United Nations. 1985.