United Nations. Department of Economic and Social Affairs. Population Division. (2013). World population prospects 2013. United Nations.
芝加哥风格引文United Nations. Department of Economic and Social Affairs. Population Division. World Population Prospects 2013. New York: United Nations, 2013.
MLA引文United Nations. Department of Economic and Social Affairs. Population Division. World Population Prospects 2013. United Nations, 2013.
警告：这些引文格式不一定是100％准确.