Wardhaugh ,Ronald. <br/><br/>
An introduction to sociolinguistics/ 
Ronald Wardhaugh. 
 - 2nd ed. 
 - Oxford:  Blackwell,  1986. 
 - vi,400 p. : 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0631183531 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Linguistics.
<br/><br/><label>LC Class. No.: </label>P40.W27 1986