Wardhaugh, Ronald. <br/><br/>
An introduction to sociolinguistics / 
Ronald Wardhaugh. 
 - 5th ed. 
 - Malden, Mass. ;  Oxford :  Blackwell Publishers,  2006 
 - vi, 418 p. :  ill. ;  26 cm. 
 - Blackwell textbooks in linguistics ;  4 .
<br/><br/> Previous ed. : 2002 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>140513559x 1405135597 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sociolinguistics.
<br/><br/><label>LC Class. No.: </label>P40  / .W27 2006