Não informado. World cartography. United Nations, Department of Social Affairs.
Chicagoスタイル(17版)引用形式Não informado. World Cartography. New York: United Nations, Department of Social Affairs.
MLA(8版)引用形式Não informado. World Cartography. United Nations, Department of Social Affairs.
警告: この引用は必ずしも正確ではありません.