Here are the five best books on Alternative Dispute Resolution, especially mediation.
1. Getting to Yes: Negotiating Agreement Without Giving In

Authored by Roger Fisher, William Ury, and Bruce Patton, this classic book introduces the principled negotiation approach, emphasizing mutual gains and collaborative problem-solving.
2. The Mediation Process: Practical Strategies for Resolving Conflict

Written by Christopher W. Moore, this comprehensive guide covers various mediation techniques and strategies, making it a valuable resource for practitioners and students alike.
3. Alternative Dispute Resolution in a Nutshell

By Jacqueline M. Nolan-Haley, this concise book provides an overview of ADR methods, including negotiation, mediation, and arbitration, offering practical insights into their applications.
4. The Handbook of Dispute Resolution

Edited by Michael L. Moffitt and Robert C. Bordone, this anthology features essays from leading experts, exploring theoretical and practical aspects of dispute resolution across various contexts.