- "Sista resan i Transvaal" (1981)
- "Jack of Fables" (2006)
Facklitteratur:
- "The Desert Fathers:Monks and Ascetics in Early Christianity" (1990)
- "Early Christian Saints" (1992)
- "Den mystiske Kristus:heliga, asketer och kättare i den antika kristendomen" (1994)
- "The Saints of Egypt" (1998)
- "A History of Christian Spirituality:From the First Apostles to the Present" (2005)
- "Pilgrim's Guide to the Holy Land:A Spiritual Journey" (2006)