APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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