Fisher, Roger. <br/><br/>
Getting to Yes :  Negotiating an Agreement Without Giving in / 
by Roger Fisher and William Ury with Bruce Patton, editor. 
 - London :  Penguin Books/Random House Business Books,  2012. 
 - XXVII, 204 strony ;  20 cm. 
<br/><br/><label>ISBN: </label>9781847940933 
<br/><br/><label>Uniwersalna Klasyfikacja Dziesiętna: </label> 005.574:316.48