Wallwork, A. (2001). International express: Upper- Intermediate. Oxford: Oxford University Press.
シカゴスタイル引用形Wallwork, Adrian. International Express: Upper- Intermediate. Oxford: Oxford University Press, 2001.
MLA引用形式Wallwork, Adrian. International Express: Upper- Intermediate. 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.