United Nations. Department of Economic and Social Affairs. Population Division. (2013). World population prospects 2013. United Nations.
Chicago-Zitierstil (17. Ausg.)United Nations. Department of Economic and Social Affairs. Population Division. World Population Prospects 2013. New York: United Nations, 2013.
MLA-Zitierstil (9. Ausg.)United Nations. Department of Economic and Social Affairs. Population Division. World Population Prospects 2013. United Nations, 2013.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.