Wardhaugh, Ronald. <br/><br/>
An introduction to sociolinguistics / 
Ronald Wardhaugh. 
 - 6th ed. 
 - Chichester, West Sussex, U.K. ;  Malden, MA :  Wiley-Blackwell,  2010. 
 - vi, 450 p. :  ill., maps ;  25 cm. 
 - Blackwell textbooks in linguistics ;  4. .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>1405186682 9781405186681 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sociolinguistics.