APA (7th ed.) Citation

Fisher, R., Ury, W., & Patton, B. M. (1987). Getting to yes: Negotiating agreement without giving in (Published in Penguin Books, repr.). Penguin.

Chicago Style (17th ed.) Citation

Fisher, Roger, William Ury, and Bruce M. Patton. Getting to Yes: Negotiating Agreement Without Giving in. Published in Penguin Books, repr. New York [etc.]: Penguin, 1987.

MLA (9th ed.) Citation

Fisher, Roger, et al. Getting to Yes: Negotiating Agreement Without Giving in. Published in Penguin Books, repr. Penguin, 1987.