Style de citation APA

Duckworth, M. (1999). Countdown to first certificate. Oxford: Oxford University Press.

Style de citation Chicago

Duckworth, Michael. Countdown to First Certificate. Oxford: Oxford University Press, 1999.

Style de citation MLA

Duckworth, Michael. Countdown to First Certificate. Oxford: Oxford University Press, 1999.

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