(2007). World population prospects: The 2006 revision: Volume I. Comprehensive Tables / Department of Economic and Social Affairs, Population Division, United Nations. United Nations.
Chicago-Zitierstil (17. Ausg.)World Population Prospects: The 2006 Revision: Volume I. Comprehensive Tables / Department of Economic and Social Affairs, Population Division, United Nations. New York: United Nations, 2007.
MLA-Zitierstil (8. Ausg.)World Population Prospects: The 2006 Revision: Volume I. Comprehensive Tables / Department of Economic and Social Affairs, Population Division, United Nations. United Nations, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.