| Emperor Michael Palaeologus and the West, 1258-1282: A Study in Byzantine-Latin Relations | 1973 |
| Byzantium and the Renaissance: Greek Scholars in Venice: Studies in the Dissemination of Greek Learning from Byzantium to Western Europe | 1973 |
| Byzantine East and Latin West: Two Worlds of Christendom in Middle Ages and Renaissance: Studies in Ecclesiastical and Cultural History | 1976 |
| Interaction of the “Sibling” Byzantine and Western Cultures in the Middle Ages and Italian Renaissance (330-1600) | 1976 |
| Byzantium: Church, Society, and Civilization Seen through Contemporary Eyes | 1984 |
| Constantinople and the West: Essays on the Late Byzantine (Palaeologan) and Italian Renaissances and the Byzantine and Roman Churches | 1989 |
| A Short History of the Ecumenical Patriarchate of Constantinople (330-1990): First Among Equals in the Eastern Orthodox Church | 1990 |
| Greek Scholars in Venice: Studies in the Dissemination of Greek Learning from Byzantium to Western Europe | 2011 |
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