International Monetary Fund. Statistics Dept. (2011). Direction of Trade Statistics Quarterly, September 2011. International Monetary Fund.
Chicagoスタイル(17版)引用形式International Monetary Fund. Statistics Dept. Direction of Trade Statistics Quarterly, September 2011. Washington, D.C.: International Monetary Fund, 2011.
MLA(8版)引用形式International Monetary Fund. Statistics Dept. Direction of Trade Statistics Quarterly, September 2011. International Monetary Fund, 2011.
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