Style de citation APA (7e éd.)

Gairns R. Ruth & Redman S. Stuart. (2005). Natural English. Pre-intermediate: Student's book. New York, Oxford University Press, 2005.

Style de citation Chicago (17e éd.)

Gairns R. Ruth et Redman S. Stuart. Natural English. Pre-intermediate: Student's Book. New York, Oxford University Press, 2005, 2005.

Style de citation MLA (9e éd.)

Gairns R. Ruth et Redman S. Stuart. Natural English. Pre-intermediate: Student's Book. New York, Oxford University Press, 2005, 2005.