Swan, Michael. <br/><br/>
The Cambridge English course / 
Michael Swan and Catherine Walter 
 - Cambridge :  Cambridge University Press,  1984-1985. 
 - v. ;  25 cm. 
<br/><br/><label>ISBN: </label>0521289084 052128984X 
<br/><br/><label>LC Class. No.: </label>PE1128.A2