APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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