United Nations Department of Economic and Social Information and Policy Analysis. (1997). The sex and age distribution of the world populations: The 1996 revision. United Nations.
Παραπομπή σε μορφή Chicago (17η εκδ.)United Nations Department of Economic and Social Information and Policy Analysis. The Sex and Age Distribution of the World Populations: The 1996 Revision. New York: United Nations, 1997.
Παραπομπή σε μορφή MLA (8th εκδ.)United Nations Department of Economic and Social Information and Policy Analysis. The Sex and Age Distribution of the World Populations: The 1996 Revision. United Nations, 1997.
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