Tony Hopwood. (1992). Integrated skills (avanced): Workbook with answer key. London: Heineman.
シカゴスタイル引用形Tony Hopwood. Integrated Skills (avanced): Workbook With Answer Key. London: Heineman, 1992.
MLA引用形式Tony Hopwood. Integrated Skills (avanced): Workbook With Answer Key. London: Heineman, 1992.
警告: この引用は必ずしも正確ではありません.