Cita APA (7th ed.)

Wardhaugh, R. (2006). An introduction to sociolinguistics (5th ed.). Blackwell.

Cita Chicago (17th ed.)

Wardhaugh, Ronald. An Introduction to Sociolinguistics. 5th ed. Malden, MA: Blackwell, 2006.

Cita MLA (9th ed.)

Wardhaugh, Ronald. An Introduction to Sociolinguistics. 5th ed. Blackwell, 2006.