Wardhaugh, Ronald
An introduction to sociolinguistics
Wiley-Blackwell, 2010
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Holmes, Janet, 1947-
An introduction to sociolinguistics
Routledge, 2013
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Wardhaugh, Ronald
An introduction to sociolinguistics
Blackwell Publishers, 2002
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Holmes, Janet
An introduction to sociolinguistics /Janet Holmes.
Longman , 1997
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Trudgill, Peter
Sociolinguistics : an introduction to language and society / Peter Trudgill
Penguin, 1995
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