Getting to yes : negotiating agreement without giving in / edited by Roger Fisher, William Ury, Bruce Patton - 2nd ed. - New York : Penguin Books, 1991 - xix, 200 p. ; 20 cm. ISBN: 0140157352 9780140157352 Subjects--Topical Terms: Conflict Resolution & Mediation.Negotiation. LC Class. No.: BF637.N4 / .F57 1991