Fisher, Roger, 1922- , Getting to yes : negotiating agreement without giving in / by Roger Fisher and William Ury, with Bruce Patton, editor ; revised editions by Fisher, Ury, and Patton. - xxix, 204 páginas ISBN: 9780143118756 Subjects--Topical Terms: Éxito.Negociación.Psicología aplicada. Dewey Class. No.: 158.5 / F535g 2011