APA (7th ed.) Citation

Upton, C., Parry, D. 1. . . . .., & Widdowson, J. D. A. (1994). Survey of English dialects: The dictionary and grammar. Routledge.

Chicago Style (17th ed.) Citation

Upton, Clive, David 1937- Parry, and J. D. A. Widdowson. Survey of English Dialects: The Dictionary and Grammar. London: Routledge, 1994.

MLA (9th ed.) Citation

Upton, Clive, et al. Survey of English Dialects: The Dictionary and Grammar. Routledge, 1994.