Soars, L., & Soars, J. (2001). American headway: Workbook 2. Oxford: Oxford Univ. Press.
シカゴスタイル引用形Soars, Liz, , John Soars. American Headway: Workbook 2. Oxford: Oxford Univ. Press, 2001.
MLA引用形式Soars, Liz, , John Soars. American Headway: Workbook 2. Oxford: Oxford Univ. Press, 2001.
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