Doff, A. (1999). Language use: Beginner. Cambridge: Cambridge University Press.
シカゴスタイル引用形Doff, Adrian. Language Use: Beginner. Cambridge: Cambridge University Press, 1999.
MLA引用形式Doff, Adrian. Language Use: Beginner. Cambridge: Cambridge University Press, 1999.
警告: この引用は必ずしも正確ではありません.