| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Medieval History: Vol 1 | 978-0-00-960075-3 (0-00-960075-2) | 1991 |
| Medieval History, Vol. 4 | 978-1-85943-125-2 (1-85943-125-9) | 1996 |
| Monastic Studies: The Continuity of Tradition | 978-1-873041-00-0 (1-873041-00-4) | 1990 |
HarperCollins · Plantagenet Press · The Davenant Press