Raising Arms: liturgy in the struggle to liberate Jerusalem in the late Middle Ages by 
The Liturgy of the Canons Regular of the Holy Sepulchre of Jerusalem by 
Medieval canon law and the crusader by The Crusades, Holy War and Canon Law by Papst Innocenz III. und die Kreuzzüge by 
Fideles Crucis by 
Innocent III and the Crown of Aragon by 
Papacy and Crusading in Europe, 1198-1245 by 
The Popes and the Baltic Crusades 1147-1254 by The Papacy and the Levant, 1204-1571 by 
The Second Crusade and the Cistercians by The Crusades and Latin Monasticism, 11th-12th Centuries by 
Popes, Monks and Crusaders by The Preaching of the Crusades to the Holy Land, 1095-1270 by 
Preaching the Crusades by 
Cistercians, Heresy and Crusade in Occitania, 1145-1229 by 
Crusade Propaganda and Ideology by 