Michael Duckworth. (2000). Countdown to first certificate ( Workbook ). Oxford: Oxford Univ. Press.
シカゴスタイル引用形Michael Duckworth. Countdown to First Certificate ( Workbook ). Oxford: Oxford Univ. Press, 2000.
MLA引用形式Michael Duckworth. Countdown to First Certificate ( Workbook ). Oxford: Oxford Univ. Press, 2000.
警告: この引用は必ずしも正確ではありません.