(2001). American Headway 2: Workbook cassette. Oxford: Oxford University Press.
シカゴスタイル引用形American Headway 2: Workbook Cassette. Oxford: Oxford University Press, 2001.
MLA引用形式American Headway 2: Workbook Cassette. Oxford: Oxford University Press, 2001.
警告: この引用は必ずしも正確ではありません.