God's Battalions: The Case for the Crusades

God's Battalions: The Case for the Crusades - Rodney Stark Well-written, easy-to-read and understand "summary" of the crusades from the beginning of islam to the 5th Crusade. This is a good introductory book to give to people who know nothing about the crusades. Includes maps, notes section (mostly references) and a biography.