Cita APA (7th ed.)

Fisher, R., Ury, W., & Patton, B. (1991). Getting to yes: Negotiating agreement without giving in (2nd ed.). Penguin Books.

Cita Chicago (17th ed.)

Fisher, Roger, William Ury, i Bruce Patton. Getting to Yes: Negotiating Agreement Without Giving in. 2nd ed. New York, N.Y: Penguin Books, 1991.

Cita MLA (9th ed.)

Fisher, Roger, et al. Getting to Yes: Negotiating Agreement Without Giving in. 2nd ed. Penguin Books, 1991.