Schoenberg, Irene <br/><br/>
Focus on Grammar 1:  an integrated skills approach / 
by Irene Schoenberg and Jay Maurer 
 - 2nd ed. 
 - London :  Pearson Education,  2006. 
<br/><br/><label>ISBN: </label>0131474669 
<br/><br/><label>Subjects--Index Terms: </label>English Grammar English Language - Usage 
<br/><br/><label>Dewey Class. No.: </label>428.4