Quirk, Randolph. <br/><br/>
A university grammar of English / 
[by] Randolph Quirk, Sidney Greenbaum. 
 - London :  Longman,  1973. 
<br/><br/> "Based on A grammar of contemporary English by Randolph Quirk [et al.]"  Includes index. 
<br/><br/>Bibliography: p. [462]-464. 
<br/><br/><label>ISBN: </label>0582552079 
<br/><br/><label>LCCN: </label>74192721 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language -- Grammar.--English language -- Grammar.