APA (7th ed.) Citation

Freeborn, D., French, P., & Langford, D. (1993). Varieties of english: An introduction to the study of language (2nd edition.). MacMillan.

Chicago Style (17th ed.) Citation

Freeborn, Dennis, Peter French, and David Langford. Varieties of English: An Introduction to the Study of Language. 2nd edition. London: MacMillan, 1993.

MLA (8th ed.) Citation

Freeborn, Dennis, et al. Varieties of English: An Introduction to the Study of Language. 2nd edition. MacMillan, 1993.

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