Soars, J., & Soars, L. (1994). Headway Pre-Intermediate: Student"s Book, Workbook. Oxford: Oxford University Press.
シカゴスタイル引用形Soars, John, , Liz Soars. Headway Pre-Intermediate: Student"s Book, Workbook. Oxford: Oxford University Press, 1994.
MLA引用形式Soars, John, , Liz Soars. Headway Pre-Intermediate: Student"s Book, Workbook. Oxford: Oxford University Press, 1994.
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