Citazione APA

Wardhaugh, R. (1992). An Introduction to sociolinguistics (2nd ed.). Oxford University Press.

Stile di citazione Chicago

Wardhaugh, Ronald. An Introduction to Sociolinguistics. 2nd ed. U K: Oxford University Press, 1992.

Citazione MLA

Wardhaugh, Ronald. An Introduction to Sociolinguistics. 2nd ed. Oxford University Press, 1992.