Soars, L., & Liz & John Soars with Jop Devoy. (1998). New Headway English Course: Upper-intermediate (Workbook with key). Oxford: Oxford University Press.
シカゴスタイル引用形Soars, Liz, , Liz & John Soars with Jop Devoy. New Headway English Course: Upper-intermediate (Workbook With Key). Oxford: Oxford University Press, 1998.
MLA引用形式Soars, Liz, , Liz & John Soars with Jop Devoy. New Headway English Course: Upper-intermediate (Workbook With Key). Oxford: Oxford University Press, 1998.
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