For more information about mediation, how it works, and how it can help you resolve even the most contentious disputes, I would recommend the following resources.
Bowling, Daniel and David Hoffman, eds. Bringing Peace into the Room: How the Personal Qualities of the Mediator Impact the Process of Conflict Resolution. San Francisco: Jossey-Bass, 2003.
Bush, Robert A. Baruch and Joseph P. Folger. The Promise of Mediation: Responding to Conflict Through Empowerment and Recognition. San Francisco: Jossey-Bass Publishers, 1994.
Cloke, Kenneth. Mediating Dangerously: The Frontiers of Conflict Resolution. San Francisco: Jossey-Bass, 2001.
Eddy, Bill. High Conflict People in Legal Disputes. San Diego: HCI Press, 2009.
Fisher, Roger, and Scott Brown. Getting Together: Building Relationships As We Negotiate. New York: Penguin Books, 1989.
Fisher, Roger, William Ury, and Bruce Patton. Getting to Yes: Negotiating Agreement Without Giving In. 2d ed. New York: Penguin Books, 1991.
Friedman, Gary and Jack Himmelstein. Challenging Conflict: Mediation Through Understanding. Chicago: ABA Publishing, 2008.
Little, J. Anderson. Making Money Talk: How to Mediate Insured Claims and Other Monetary Disputes. Chicago: ABA Publishing, 2007.
Moore, Christopher W. The Mediation Process: Practical Strategies for Resolving Conflicts. 4th ed. San Francisco: Jossey-Bass, 2014.
Rosenberg, Marshall B. Nonviolent Communication: A Language of Life. 2d ed. Encinitas: Puddle Dancer Press, 2003.
Ury, William. Getting Past No: Negotiating Your Way from Confrontation to Cooperation. Rev. ed. New York: Bantam Books, 1993.