Swan, Michael. <br/><br/>
How English works :  a grammar practice book with answers / 
Michael Swan and Catherine Walter.  
 - New York :  Oxford University Press,   c2009. 
 - 358 p. :  ill. ;  25 cm.  
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9780194314565 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English Language.
<br/><br/><label>Dewey Class. No.: </label>420  / SWA