Fisher, Roger. <br/><br/>
Getting to yes :  negotiating an agreement without giving in / 
Roger Fisher & William Ury with Bruce Patton. 
 - 2nd ed. 
 - [London] :  Century Business,  1991. 
 - xv, 207 p. 
<br/><br/>
<br/><br/><label>ISBN: </label>071265528X (bpk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Negotiation.