APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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