APA (7th ed.) Citation

Blount, B. G., Sanches, M., & Gumperz, J. J. (1977). Sociocultural dimensions of language change. Academic Press.

Chicago Style (17th ed.) Citation

Blount, Ben G., Mary Sanches, and John J. Gumperz. Sociocultural Dimensions of Language Change. New York: Academic Press, 1977.

MLA (9th ed.) Citation

Blount, Ben G., et al. Sociocultural Dimensions of Language Change. Academic Press, 1977.