Macmillan · Palgrave Macmillan
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Celtic and Roman Traditions: Conflict and Consensus in the Early Medieval Church | 978-0-230-60115-4 (0-230-60115-4) | 2006 |
| The Celtic and Roman Traditions: Conflict and Consensus in the Early Medieval Church | 978-1-4039-7299-6 (1-4039-7299-0) | 2006 |