WERNER, P. K. <br/><br/>
Interactions II A Communicative Grammar, 

 - 5th Ed.  
 - New York,  McGraw- Hill Publishing Company,  1990. 
 - xii, 363p,: ill.; figure picture  Index  23cm 
<br/><br/><label>ISBN: </label>0-07-557536-1 
<br/><br/><label>Dewey Class. No.: </label>425WER