(2005). Discover American: An integrated skills text for intermediate. D.C.: U.S. Information Agency.
シカゴスタイル引用形Discover American: An Integrated Skills Text for Intermediate. D.C.: U.S. Information Agency, 2005.
MLA引用形式Discover American: An Integrated Skills Text for Intermediate. D.C.: U.S. Information Agency, 2005.
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