Swan, Michael <br/><br/>
Practical English usage 

 - 2 
 -  Oxford University Press, Oxford  1996 
 - 654 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Standard English usage-Study and teaching
<br/><br/><label>Dewey Class. No.: </label>428.07  SWA-P2