APA (7th ed.) Citation

Wardhaugh, R. (1992). An introduction to sociolinguistics (2nd ed.). B. Blackwell.

Chicago Style (17th ed.) Citation

Wardhaugh, Ronald. An Introduction to Sociolinguistics. 2nd ed. Oxford: B. Blackwell, 1992.

MLA (9th ed.) Citation

Wardhaugh, Ronald. An Introduction to Sociolinguistics. 2nd ed. B. Blackwell, 1992.

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