APA (7th ed.) Citation

Upton, C., & Widdowson, J. D. A. (2006). An atlas of English dialects / Clive Upton and J. D. A. Widdowson. Routledge.

Chicago Style (17th ed.) Citation

Upton, Clive, and J. D. A. Widdowson. An Atlas of English Dialects / Clive Upton and J. D. A. Widdowson. Abingdon, Oxfordshire ; New York: Routledge, 2006.

MLA (9th ed.) Citation

Upton, Clive, and J. D. A. Widdowson. An Atlas of English Dialects / Clive Upton and J. D. A. Widdowson. Routledge, 2006.

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