APA (7th ed.) Citation

Upton, C., Sanderson, S., Widdowson, J. D. A., & Brophy, D. (1987). Word maps: A dialect atlas of England. Croom Helm.

Chicago Style (17th ed.) Citation

Upton, Clive, Stewart Sanderson, John D. A. Widdowson, and David Brophy. Word Maps: A Dialect Atlas of England. London [u.a.]: Croom Helm, 1987.

MLA (9th ed.) Citation

Upton, Clive, et al. Word Maps: A Dialect Atlas of England. Croom Helm, 1987.