Crystal, David. <br/><br/>
The Cambridge Encyclopedia of Language. 

 - 3rd ed. 
 - New York :  Cambridge University Press,  2010. 
 - 516 p.  ill.  28 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9780521736503 
<br/><br/><label>Dewey Class. No.: </label>401.4 CRY