Cita APA (7a ed.)

Wardhaugh, R. (1992). An introduction to sociolinguistics (2nd ed.). Blackwell.

Cita Chicago Style (17a ed.)

Wardhaugh, Ronald. An Introduction to Sociolinguistics. 2nd ed. Malden, Mass.: Blackwell, 1992.

Cita MLA (8a ed.)

Wardhaugh, Ronald. An Introduction to Sociolinguistics. 2nd ed. Blackwell, 1992.