APA (7. basım) Alıntı

Duckworth M. Michael & Gude K. Kathy. (2004). Countdown to First Certificate. Workbook with Key tapescrits. New York, Oxford University Press, 2004.

Chicago Style (17. basım) Atıf

Duckworth M. Michael ve Gude K. Kathy. Countdown to First Certificate. Workbook with Key Tapescrits. New York, Oxford University Press, 2004, 2004.

MLA (9th ed.) Atıf

Duckworth M. Michael ve Gude K. Kathy. Countdown to First Certificate. Workbook with Key Tapescrits. New York, Oxford University Press, 2004, 2004.