Wardhaugh, Ronald. <br/><br/>
An introduction to sociolinguistics / 
Ronald Wardhaugh. 
 - 4th ed. 
 - Malden, Mass. :  Blackwell Publishers,  2002. 
 - vi, 408 p. :  ill. ;  24 cm. 
 - Blackwell textbooks in linguistics ;  4 .
<br/><br/>Includes bibliographical references and index. 
<br/><br/>
<br/><br/><label>ISBN: </label>0631225404 (pbk.)  RM106.02 
<br/><br/><label>LCCN: </label>2001-025979 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sociolinguistics.