Tillitt, Bruce <br/><br/>
Speaking naturally  : communication skills in american english 
/ Bruce Tillitt, Mary Newton Bruder 
 - 13th. print. 
 - Cambridge :   Cambridge University Press,   2000. 
 - XI, 115 s. ;  26 cm.  10AGR-TilB-Spe 
<br/><br/><label>ISBN: </label>0521271304