Não informado. (1948). Demographic Yearbook. United Nations, Department of Economic and Social Affairs, Statistical Office.
Chicago-Zitierstil (17. Ausg.)Não informado. Demographic Yearbook. New York: United Nations, Department of Economic and Social Affairs, Statistical Office, 1948.
MLA-Zitierstil (8. Ausg.)Não informado. Demographic Yearbook. United Nations, Department of Economic and Social Affairs, Statistical Office, 1948.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.