Style de citation APA

Graddol, D., Cheshire, J., & Swann, J. (1994). Describing language (2nd ed.). Open University Press.

Style de citation Chicago

Graddol, David, Jenny Cheshire, et Joan Swann. Describing Language. 2nd ed. Buckingham ; Philadelphia: Open University Press, 1994.

Style de citation MLA

Graddol, David, et al. Describing Language. 2nd ed. Open University Press, 1994.