O'Malley, J. W. (1968). Giles of Viterbo on church and reform: A study in Renaissance thought. E.J. Brill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रO'Malley, John W. Giles of Viterbo on Church and Reform: A Study in Renaissance Thought. Leiden: E.J. Brill, 1968.
एमएलए (8वां संस्करण) प्रशस्ति पत्रO'Malley, John W. Giles of Viterbo on Church and Reform: A Study in Renaissance Thought. E.J. Brill, 1968.
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