Não informado. (1948). Demographic Yearbook. United Nations, Department of Economic and Social Affairs, Statistical Office.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Demographic Yearbook. New York: United Nations, Department of Economic and Social Affairs, Statistical Office, 1948.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Demographic Yearbook. United Nations, Department of Economic and Social Affairs, Statistical Office, 1948.
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