John, P. <br/><br/>
Sociolinguistics/ 
Patrick John and David Christopher 
 - New Delhi:  Commonwealth,  2011. 
 - 276p:  ill.;  22 cm. 
<br/><br/> includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9788131102664 
<br/><br/><label>LC Class. No.: </label>DUCE P40.J6