Style de citation APA

Duckworth, M., & Gude, K. (2000). Countdown to first certificate: Student's book (6th ed.). Oxford: Oxford U. P..

Style de citation Chicago

Duckworth, Michael, et Kathy Gude. Countdown to First Certificate: Student's Book. 6th ed. Oxford: Oxford U. P., 2000.

Style de citation MLA

Duckworth, Michael, et Kathy Gude. Countdown to First Certificate: Student's Book. 6th ed. Oxford: Oxford U. P., 2000.

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