APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Wardhaugh, Ronald. An Introduction to Sociolinguistics. Basil Blackwell Publisher, 2006.

MLA (8th ed.) Citation

Wardhaugh, Ronald. An Introduction to Sociolinguistics. Basil Blackwell Publisher, 2006.

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