Wilson, W. (2007). Fifty-fifty: A speaking and listening course. Hong Kong: Longman Asia ELT.
シカゴスタイル引用形Wilson, Warren. Fifty-fifty: A Speaking and Listening Course. Hong Kong: Longman Asia ELT, 2007.
MLA引用形式Wilson, Warren. Fifty-fifty: A Speaking and Listening Course. Hong Kong: Longman Asia ELT, 2007.
警告: この引用は必ずしも正確ではありません.