Scott L. Lyn & Scott D. David. (2005). Natural English. Pre-intermediate: Workbook with key. New York, Oxford University Press, 2005.
Chicagoスタイル(17版)引用形式Scott L. Lyn , Scott D. David. Natural English. Pre-intermediate: Workbook with Key. New York, Oxford University Press, 2005, 2005.
MLA(9版)引用形式Scott L. Lyn , Scott D. David. Natural English. Pre-intermediate: Workbook with Key. New York, Oxford University Press, 2005, 2005.
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