United Nations Department of Economic and Social Affairs. (2009). World population prospects the 2008 Revision. United Nations.
Цитирование в стиле Чикаго (17-е изд.)United Nations Department of Economic and Social Affairs. World Population Prospects the 2008 Revision. New York: United Nations, 2009.
Цитирование MLA (8-е изд.)United Nations Department of Economic and Social Affairs. World Population Prospects the 2008 Revision. United Nations, 2009.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.