APA (7th ed.) Citation

Wardhaugh, R. (2005). An introduction to sociolinguistics / Ronald Wardhaugh (5th ed.). Blackwell.

Chicago Style (17th ed.) Citation

Wardhaugh, Ronald. An Introduction to Sociolinguistics / Ronald Wardhaugh. 5th ed. Oxford: Blackwell, 2005.

MLA (9th ed.) Citation

Wardhaugh, Ronald. An Introduction to Sociolinguistics / Ronald Wardhaugh. 5th ed. Blackwell, 2005.

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