Crystal, David, <br/><br/>
The Cambridge encyclopedia of the English language / 

 - Cambridge   Cambridge University Press,  1995. 
 - vii, 489 p. :  ill. (col., maps ) ;  30 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0521401798  
<br/><br/><label>LC Class. No.: </label>PE1072  / .C88 1995