APA (7. basım) Alıntı

Duckworth M. Michael, Gude K. Kathy, & Quintana J. Jenny. (2008). Countdown to First Certificate. Student`s Book. New York, Oxford University Press, 2008.

Chicago Style (17. basım) Atıf

Duckworth M. Michael, Gude K. Kathy, ve Quintana J. Jenny. Countdown to First Certificate. Student`s Book. New York, Oxford University Press, 2008, 2008.

MLA (9th ed.) Atıf

Duckworth M. Michael, et al. Countdown to First Certificate. Student`s Book. New York, Oxford University Press, 2008, 2008.