Quirk, Randolph. <br/><br/>
University grammar of english 

 - Delhi :  Longman Group,  2007 
 - 484. 
<br/><br/><label>ISBN: </label>981405321X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English grammar
<br/><br/><label>Dewey Class. No.: </label>425  / QUI