APA (7th ed.) Citation

Graddol, D., Cheshire, J., & Swann, J. (1987). Describing language. Open University Press.

Chicago Style (17th ed.) Citation

Graddol, David, Jenny Cheshire, and Joan Swann. Describing Language. Milton Keynes [Buckinghamshire] ; Philadelphia: Open University Press, 1987.

MLA (9th ed.) Citation

Graddol, David, et al. Describing Language. Open University Press, 1987.