Duckworth, M. (2008). Countdown to first certificate: (Student's book). Oxford: Oxford University Press.
Style de citation ChicagoDuckworth, Michael. Countdown to First Certificate: (Student's Book). Oxford: Oxford University Press, 2008.
Style de citation MLADuckworth, Michael. Countdown to First Certificate: (Student's Book). Oxford: Oxford University Press, 2008.
Attention : ces citations peuvent ne pas être correctes à 100%.