Hubbard, Peter S. <br/><br/>
Prism :  An Intermediate course in english / 

 - São Paulo :  Ática,  1996. 
<br/><br/><br/>Port. 
<br/><br/><label>ISBN: </label>8508061064 
<br/><br/><label>Dewey Class. No.: </label>428.24