Crystal, David . <br/><br/>
The cambridge encyclopaedia of Language /  Textual Documents 
David Crystal. 
 - London :  Cambridge University Press ,  1997. 
 - 447p. :  ill ;  24cm. . 
<br/><br/><label>ISBN: </label> HB 
<br/><br/><label>Subjects--Index Terms: </label>Encyclopaedia - Language 
<br/><br/><label>Dewey Class. No.: </label>400.030  / Cr 889 Ca