Duckworth M. Michael & Gude K. Kathy. (2004). Countdown to First Certificate. Workbook with Key tapescrits. New York, Oxford University Press, 2004.
Dyfyniad Arddull ChicagoDuckworth M. Michael and Gude K. Kathy. Countdown to First Certificate. Workbook with Key Tapescrits. New York, Oxford University Press, 2004, 2004.
Dyfyniad MLADuckworth M. Michael and Gude K. Kathy. Countdown to First Certificate. Workbook with Key Tapescrits. New York, Oxford University Press, 2004, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.