Books
- FORGIVENESS: An Annotated Bibliography by Mark Umbreit and Jonathan Fier (2002) (PDF)
- Peacemaking and Spirituality: A Journey Toward Healing & Strength by Mark Umbreit (2000) (PDF)
- Peacemaking and Spirituality: Touching the Soul Within the Energy of Conflict and Trauma by Mark Umbreit (2005) (PDF)
- The Journey of Authentic Peacemaking by Mark Umbreit (2005) (PDF)
- The paradox of forgiveness in restorative justice by Marilyn Peterson Armour and Mark Umbreit (2005). In Handbook of Forgiveness, by Everett Worthington (Editor). New York: Routledge To Order
- Twelve Steps of Personal Peacemaking by Mark Umbreit (2002) (PDF)