APA (7th ed.) Citation

Pomphery, C. (1991). Language varieties and change. Cambridge University Press.

Chicago Style (17th ed.) Citation

Pomphery, Cathy. Language Varieties and Change. New York, New York: Cambridge University Press, 1991.

MLA (9th ed.) Citation

Pomphery, Cathy. Language Varieties and Change. Cambridge University Press, 1991.