APA Zitierstil

Duckworth, M. (2008). Countdown to first certificate: (Student's book). Oxford: Oxford University Press.

Chicago Zitierstil

Duckworth, Michael. Countdown to First Certificate: (Student's Book). Oxford: Oxford University Press, 2008.

MLA Zitierstil

Duckworth, Michael. Countdown to First Certificate: (Student's Book). Oxford: Oxford University Press, 2008.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.