Oxenden, C. (2008). American English file: Workbook 1. Oxford: Oxford University.
シカゴスタイル引用形Oxenden, Clive. American English File: Workbook 1. Oxford: Oxford University, 2008.
MLA引用形式Oxenden, Clive. American English File: Workbook 1. Oxford: Oxford University, 2008.
警告: この引用は必ずしも正確ではありません.