Getting to Yes is a classic book on negotiation and conflict resolution by Roger Fisher and William Ury. It introduces the concept of principled negotiation, which focuses on finding mutually beneficial solutions rather than engaging in win-lose scenarios. The authors provide practical techniques for separating people from the problem, focusing on interests rather than positions, generating options, and using objective criteria to reach agreements. This book is highly recommended for business professionals who want to improve their negotiation skills and create win-win outcomes.