APA (7th ed.) Citation

Wardhaugh, R. (2000). An introduction to sociolinguistics. Blackwell Publishers.

Chicago Style (17th ed.) Citation

Wardhaugh, Ronald. An Introduction to Sociolinguistics. Blackwell Publishers, 2000.

MLA (9th ed.) Citation

Wardhaugh, Ronald. An Introduction to Sociolinguistics. Blackwell Publishers, 2000.

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