ORTON, C. P. (1952). The shorter Cambridge medieval history. University Press.
Tohutoru Kātū Chicago (17th ed.)ORTON, C.W. Previte. The Shorter Cambridge Medieval History. Cambridge: University Press, 1952.
Tohutoro MLA (9th ed.)ORTON, C.W. Previte. The Shorter Cambridge Medieval History. University Press, 1952.
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