Duckworth M. Michael & Gude K. Kathy. (2004). Countdown to First Certificate. Workbook with Key tapescrits. New York, Oxford University Press, 2004.
Chicago Style (17th ed.) CitationDuckworth M. Michael and Gude K. Kathy. Countdown to First Certificate. Workbook with Key Tapescrits. New York, Oxford University Press, 2004, 2004.
MLA (9th ed.) CitationDuckworth M. Michael and Gude K. Kathy. Countdown to First Certificate. Workbook with Key Tapescrits. New York, Oxford University Press, 2004, 2004.
Warning: These citations may not always be 100% accurate.