Não informado. (1951). Population Bulletin of the United Nations. United Nations, Population Division.
Chicagoスタイル(17版)引用形式Não informado. Population Bulletin of the United Nations. New York: United Nations, Population Division, 1951.
MLA(8版)引用形式Não informado. Population Bulletin of the United Nations. United Nations, Population Division, 1951.
警告: この引用は必ずしも正確ではありません.