APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Upton, Clive, David Parry, and John David Allison Widdowson. Survey of English Dialects: The Dictionary and Grammar. 1st publ. London: Routledge, 1994.

MLA (9th ed.) Citation

Upton, Clive, et al. Survey of English Dialects: The Dictionary and Grammar. 1st publ. Routledge, 1994.

Warning: These citations may not always be 100% accurate.