Mark O'Neil. (2003). Business explorer 2 (Teacher's book). Cambridge, UK: Cambridge Univ. Press.
シカゴスタイル引用形Mark O'Neil. Business Explorer 2 (Teacher's Book). Cambridge, UK: Cambridge Univ. Press, 2003.
MLA引用形式Mark O'Neil. Business Explorer 2 (Teacher's Book). Cambridge, UK: Cambridge Univ. Press, 2003.
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