United Nations. Department of International Economic and Social Affairs. (1982). World population trends and policies: 1981 monitoring report. United Nations.
Chicago Style (17th ed.) CitationUnited Nations. Department of International Economic and Social Affairs. World Population Trends and Policies: 1981 Monitoring Report. New York: United Nations, 1982.
MLA引文United Nations. Department of International Economic and Social Affairs. World Population Trends and Policies: 1981 Monitoring Report. United Nations, 1982.
警告：這些引文格式不一定是100％准確.