Allsopp, B. (1971). Romanesque architecture: The Romanesque Achievement. New York: The John Day Company.
Παραπομπή Chicago StyleAllsopp, Bruce. Romanesque Architecture: The Romanesque Achievement. New York: The John Day Company, 1971.
Παραπομπή MLAAllsopp, Bruce. Romanesque Architecture: The Romanesque Achievement. New York: The John Day Company, 1971.
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