World Bank. (2009). Global economic prospects 2009: Commodities at the crossroads. World Bank.
Chicagoスタイル(17版)引用形式World Bank. Global Economic Prospects 2009: Commodities at the Crossroads. Washington, D,C: World Bank, 2009.
MLA(9版)引用形式World Bank. Global Economic Prospects 2009: Commodities at the Crossroads. World Bank, 2009.
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