Wardhaugh, Ronald. <br/><br/>
An introduction to sociolinguistics / 
Ronald Wardhaugh. 
 - New York :  Blackwell,  c1992. 
 - viii, 400 p. :  ill. ;  23 cm. 
<br/><br/>   
<br/><br/>Includes bibliography (p. 365 - 379) and index. 
<br/><br/><br/>eng 
<br/><br/><label>ISBN: </label>0631183531  TZS 20,000/= 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sociolinguistics.
<br/><br/><label>Dewey Class. No.: </label>306.44 WAR