Não informado. (1947). Monthly Bulletin of Statistics. United Nations, Department of Economic and Social Affairs, Statistical Office.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Monthly Bulletin of Statistics. New York: United Nations, Department of Economic and Social Affairs, Statistical Office, 1947.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Monthly Bulletin of Statistics. United Nations, Department of Economic and Social Affairs, Statistical Office, 1947.
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