Fisher, R., Ury, W., & Patton, B. (1991). Getting to yes: Negotiating agreement without giving in (Second edition.). Penguin Books.
Παραπομπή σε μορφή Chicago (17η εκδ.)Fisher, Roger, William Ury, και Bruce Patton. Getting to Yes: Negotiating Agreement Without Giving in. Second edition. New York, New York: Penguin Books, 1991.
Παραπομπή σε μορφή MLA (9th εκδ.)Fisher, Roger, et al. Getting to Yes: Negotiating Agreement Without Giving in. Second edition. Penguin Books, 1991.
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