Fisher, R., Ury, W., & Patton, B. M. (1987). Getting to yes: Negotiating agreement without giving in (Published in Penguin Books, repr.). Penguin.
Cita Chicago Style (17a ed.)Fisher, Roger, William Ury, y Bruce M. Patton. Getting to Yes: Negotiating Agreement Without Giving in. Published in Penguin Books, repr. New York [etc.]: Penguin, 1987.
Cita MLA (9a ed.)Fisher, Roger, et al. Getting to Yes: Negotiating Agreement Without Giving in. Published in Penguin Books, repr. Penguin, 1987.
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