Quirk, Randolph. <br/><br/>
A University Grammar of English /  

 - 1st ed /  
 - Essex CM20 2JE :   Longman Group Ltd.. 
 - p.484,xi :  
<br/><br/><label>ISBN: </label>0-582-02640-7 
<br/><br/><label>Dewey Class. No.: </label>P111(T4)  / L3