Medieval Italy : an encyclopedia

Published 2004

Dictionnaire des arts liturgiques : XIXe - XXe siècle

Published 1996

Mittelalterliche Burgen in Hessen : 800 Burgen, Burgruinen und Burgstätten

by Knappe, Rudolf, Knappe, Rudolf
Published 1994

Burgen des deutschen Mittelalters : Grundriss-Lexikon

by Krahe, Friedrich Wilhelm, Krahe, Friedrich Wilhelm
Published 1994