Fisher, Roger. <br/><br/>
Getting to yes : negotiating agreement without giving in / by Roger Fisher, William Ury, Bruce Patton. 

 - 2nd ed. 
 - New York, N.Y. :  Penguin Books,  1991. 
 - xix, 200 p. 
<br/><br/> Contents : The problem--The method--Yes, but. 
<br/><br/><label>ISBN: </label>0140157352 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Negotiation.