United Nations. Department of Economic and Social Affairs. Population Division. (2013). World population prospects 2013. United Nations.
Chicago-čujuhus (17. p.)United Nations. Department of Economic and Social Affairs. Population Division. World Population Prospects 2013. New York: United Nations, 2013.
MLA-čujuhus (9. p.)United Nations. Department of Economic and Social Affairs. Population Division. World Population Prospects 2013. United Nations, 2013.
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