APA (7th ed.) Citation

Wardhaugh, R. (2006). An Introduction to Sociolinguistics. Blackwell Publishing.

Chicago Style (17th ed.) Citation

Wardhaugh, Ronald. An Introduction to Sociolinguistics. Blackwell Publishing, 2006.

MLA (8th ed.) Citation

Wardhaugh, Ronald. An Introduction to Sociolinguistics. Blackwell Publishing, 2006.

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