Elaine Walker. (2000). New grammar practice for pre-intermediate students. London: Longman.
シカゴスタイル引用形Elaine Walker. New Grammar Practice for Pre-intermediate Students. London: Longman, 2000.
MLA引用形式Elaine Walker. New Grammar Practice for Pre-intermediate Students. London: Longman, 2000.
警告: この引用は必ずしも正確ではありません.