Fedden, R. (1950). Crusader castles: A brief study in the military architecture of the crusades. London: Art and Technics.
استشهاد بنمط شيكاغوFedden, Robin. Crusader Castles: A Brief Study in the Military Architecture of the Crusades. London: Art and Technics, 1950.
MLA استشهادFedden, Robin. Crusader Castles: A Brief Study in the Military Architecture of the Crusades. London: Art and Technics, 1950.
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