Cita APA

Fisher, R., Ury, W., & Patton, B. (1981). Getting to yes: Negotiating agreement without giving in. Penguin Books.

Citación estilo Chicago

Fisher, Roger, William Ury, and Bruce Patton. Getting to Yes: Negotiating Agreement Without Giving in. Middlesex, England: Penguin Books, 1981.

Cita MLA

Fisher, Roger, et al. Getting to Yes: Negotiating Agreement Without Giving in. Penguin Books, 1981.