Richards, Jack C. <br/><br/>
Inter change (Students casset's) / 
Richards, Jack C. 
 - New York:  Cambridge University Press,  1991. 
 - 0-521-37535-5 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>812243248x 
<br/><br/><label>Dewey Class. No.: </label>389.62 RIC