Wardhaugh, Ronald. <br/><br/>
An introduction to sociolinguistics / 
Ronald Wardhaugh. 
 - Oxford :  Basil Blackwell,  1986. 
 - 384 p. ;  23 cm. 
<br/><br/>Bibliography : p. 365-379. 
<br/><br/>
<br/><br/><label>ISBN: </label>063114272X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sociolinguistics.