Não informado. (1969). Journal of Development Planning. United Nations, Department of Economic and Social Affairs.
Chicagoスタイル(17版)引用形式Não informado. Journal of Development Planning. New York: United Nations, Department of Economic and Social Affairs, 1969.
MLA(8版)引用形式Não informado. Journal of Development Planning. United Nations, Department of Economic and Social Affairs, 1969.
警告: この引用は必ずしも正確ではありません.