United Nations. Department of Economic and Social Affairs. Population Division. (2007). World population prospects: The 2006 revision. United Nations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited Nations. Department of Economic and Social Affairs. Population Division. World Population Prospects: The 2006 Revision. New York: United Nations, 2007.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited Nations. Department of Economic and Social Affairs. Population Division. World Population Prospects: The 2006 Revision. United Nations, 2007.
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