O'Malley, J. W. (1968). Giles of Viterbo on church and reform: A study in Renaissance thought. E. J. Brill.
Chicago-viite (17. p.)O'Malley, John W. Giles of Viterbo on Church and Reform: A Study in Renaissance Thought. Leiden: E. J. Brill, 1968.
MLA-viite (8. p.)O'Malley, John W. Giles of Viterbo on Church and Reform: A Study in Renaissance Thought. E. J. Brill, 1968.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.