John France & William G. Zajac 
Crusades and their Sources [PDF ebook] 
Essays Presented to Bernard Hamilton

This volume is concerned with the sources for the study of the Crusades, conceived in terms of the records of their history and of their enemies, the motives that inspired them, and the monuments which they left behind. Some of the studies analyse particular historical sources, both written and visual, for the events of the Crusades and the history of the Crusader states. Others look more broadly at the impact of the Crusading movement in the West, its origins and its propaganda, from the First Crusade to the time of Erasmus.