Fisher, Roger. <br/><br/>
Getting to yes :  negotiating agreement without giving in / 
Roger Fisher & William Ury, with Bruce Patton, editor. 
 - 2nd ed. 
 - New York :  Penguin Books,  1991. 
 - xix, 200 p. ;  20 cm. 
<br/><br/>
<br/><br/><label>ISBN: </label>9780140157352 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Negotiation.