Wardhaugh, Ronald. <br/><br/>
An Introduction sociolinguistics /  
NULL. 
 - 2nd ed. /   . 
 - United Kingdom :   Blackwell Publishers ,   1992(rep1993). 
 - 400p ;   25cm. 
<br/><br/>NULL 
<br/><br/><label>ISBN: </label>0631183531 
<br/><br/><label>Subjects--Index Terms: </label>SOCIOLINGUISTICS 
<br/><br/><label>Dewey Class. No.: </label>306.44  / WAR/I