- A Cloud of Witnesses: An Introductory History of the Development of Christian Doctrine to 500 AD, New Revised Edition (Cistercian Studies series)
- Wholly Animals: A Book of Beastly Tales
- Strangers in a Strange Land: The Trappist Monastery of Saint Susan at Lulworth, Dorset, 1794–1817 (Cistercian Studies Series)
- What Nuns Read: Books and Libraries in Medieval English Nunneries (Cistercian Studies Series)
- A Saint in the Sun: Praising Saint Bernard in the France of Louis XIV













