Não informado. (1968). Commodity trade and price trends. International Bank for Reconstruction and Development.
Chicagoスタイル(17版)引用形式Não informado. Commodity Trade and Price Trends. Washington: International Bank for Reconstruction and Development, 1968.
MLA(8版)引用形式Não informado. Commodity Trade and Price Trends. International Bank for Reconstruction and Development, 1968.
警告: この引用は必ずしも正確ではありません.