Wardhaugh, R. (1998). An introduction to sociolinguistics (3rd ed.). Malden, MA: Blackwell.
Trích dẫn kiểu ChicagoWardhaugh, Ronald. An Introduction to Sociolinguistics. 3rd ed. Malden, MA: Blackwell, 1998.
Deismireacht MLAWardhaugh, Ronald. An Introduction to Sociolinguistics. 3rd ed. Malden, MA: Blackwell, 1998.
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