Style de citation APA

Duckworth, M. (2008). Countdown to first certificate. Oxford: Oxford University Press.

Style de citation Chicago

Duckworth, Michael. Countdown to First Certificate. Oxford: Oxford University Press, 2008.

Style de citation MLA

Duckworth, Michael. Countdown to First Certificate. Oxford: Oxford University Press, 2008.

Attention : ces citations peuvent ne pas être correctes à 100%.