World Bank. (2009). Global economic prospects: Commodities at the crossroads. World Bank.
Chicagoスタイル(17版)引用形式World Bank. Global Economic Prospects: Commodities at the Crossroads. Washington, DC: World Bank, 2009.
MLA(8版)引用形式World Bank. Global Economic Prospects: Commodities at the Crossroads. World Bank, 2009.
警告: この引用は必ずしも正確ではありません.