Harding, K., & Wallwork, A. (2007). International express: Upper-intermediate .Student's Book. Oxford: Oxford Univ. Press.
シカゴスタイル引用形Harding, Keith, , Adrian Wallwork. International Express: Upper-intermediate .Student's Book. Oxford: Oxford Univ. Press, 2007.
MLA引用形式Harding, Keith, , Adrian Wallwork. International Express: Upper-intermediate .Student's Book. Oxford: Oxford Univ. Press, 2007.
警告: この引用は必ずしも正確ではありません.