Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Upton, Clive, David Parry, y J. D. A. Widdowson. Survey of English Dialects: The Dictionary and Grammar. London [etc.]: Routledge, 1994.

Cita MLA (9a ed.)

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