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

 - New York :  Cambridge University Press,  1987. 
 - vii, 472 p. :  ill. (col.) ;  28 cm. 
<br/><br/>Includes indexes. 
<br/><br/><label>ISBN: </label>0521264383 
<br/><br/><label>LC Class. No.: </label>P29  / .C87 1987