Duckworth, M. (1998). Going international English for tourism: Workbook. American: Oxford University press.
シカゴスタイル引用形Duckworth, Michael. Going International English for Tourism: Workbook. American: Oxford University press, 1998.
MLA引用形式Duckworth, Michael. Going International English for Tourism: Workbook. American: Oxford University press, 1998.
警告: この引用は必ずしも正確ではありません.