Fisher, Roger, 1922- Getting to yes : negotiating agreement without giving in / by Roger Fisher and William Ury, with Bruce Patton, editor. - 3rd ed. - New York Penguin 2011. - xxix, 204 p. ill. Incluye referencia bibliografica ISBN: 9780143118756 (pbk.) Subjects--Topical Terms: NegociacionNegociacion administrativa LC Class. No.: BF637.N4 / F57 2011 Dewey Class. No.: 158.5 / FIS-GET 3e