Collins Cobuild advance dictionary of American english. 

 - 1st 
 - Great Britain :  Thomson,  2007. 
 - lxxxvii, 1591 pages 23.4 cm  CD 
<br/><br/> Includes bibliographic references 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>978-I-4240-0363-1 
<br/><br/><label>LC Class. No.: </label>423 C68