Articles

• The Distribution of Irish Scriptoria and Centres of Learning from 730 to 1111, pp. 243—72, in Studies in the Early British Church, ed. Nora Chadwick, Cambridge, 1958.
• The Celtic Church and the Papacy, pp. 1—28, in The English Church and the Papacy in the Middle Ages, ed. C.H. Laurence, London, 1965.
• Some Aspects of Irish Influence on Early English Private Prayer, pp. 48—61, Celtica 5, 1970.
• Sancity and Secularity in the Early Irish Church', pp. 21-37, in Studies in Church History 10, 1973.
• Synodus II S.Patricii, in Latin Script and Letters,, ed. J.J. O'Mara and B. Naumann, Leiden, 1976.
• The Celtic Church: Is this a valid concept?, pp. 1—20 Cambridge Medieval Celtic Studies i, summer 1981.
• In A New History of Ireland, volume one, 2006, ed. Dáibhí Ó Cróinín;
• The Church in Irish Society, 400-800, pp. 301—330.
• The Irish Church, 800-c.1050, pp. 635—655.

Books

• The Church in Early Irish Society, London, 1966.
• Early Christian Ireland: An introduction to the sources, London, 1972.
• The Modern Traveller to the Early Irish Church, London, 1977 (with Ann Hamlin]].
• Celtic Britain in the Early Middle Ages, Woodbridge, 1980.
• Church and Society in Ireland, A.D. 400-1200, ed. David Dumville, 1987.

Lectures

• Early Christianity in Pictland; Jarrow lecture, 1970 (published in Hughes, 1980, above, pp. 1—16)
• The Early Celtic Idea of History and the Modern Historian: An Inaugural Lecture, Cambridge, 1977.

Other

• Introduction to A History of Medieval Ireland by A.J. Otway-Ruthven.