On Killing: The Psychological Cost of Learning to Kill in War and Society

On Combat: The Psychology and Physiology of Deadly Conflict in War and Peace, Edition 4

Stop Teaching Our Kids to Kill: A Call to Action Against TV, Movie & Video Game Violence

On Spiritual Warfare: 22 Warning Orders for Virtuous Warriors

Bulletproof Marriage: A 90-Day Devotional

On Hunting: A Definitive Study of the Mind, Body, and Ecology of the Hunter in the Modern World