Getting to Yes
Getting to Yes: Negotiating Agreement Without Giving In is a best-selling 1981 non-fiction book by Roger Fisher and William L. Ury. Subsequent editions in 1991 and 2011 added Bruce Patton as co-author. All of the authors were members of the Harvard Negotiation Project. The book made appearances for years on the Business Week bestseller list. The book suggests a method called principled negotiation or "negotiation of merits".