Style de citation APA (7e éd.)

Richards J. C. Jack & Bohlke D. David. (2012). Speak Now 1. Communicate with Confidence. Class Audio. Oxford, Oxford University Press, 2012.

Style de citation Chicago (17e éd.)

Richards J. C. Jack et Bohlke D. David. Speak Now 1. Communicate with Confidence. Class Audio. Oxford, Oxford University Press, 2012, 2012.

Style de citation MLA (9e éd.)

Richards J. C. Jack et Bohlke D. David. Speak Now 1. Communicate with Confidence. Class Audio. Oxford, Oxford University Press, 2012, 2012.