TY - BOOK T1 - Getting to yes : negotiating agreement without giving in A1 - Fisher, Roger A2 - Ury, William A2 - Patton, Bruce LA - English PP - New York etc. PB - Penguin books YR - 1991 ED - 2nd ed. UL - https://colectivo.uloyola.es/Record/L68239 OP - 198 SN - 0140157352 KW - Negociación ER -