Oxford University Press · Penguin
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Bloodfeud: Murder and Revenge in Anglo-Saxon England | 978-0-19-517944-6 (0-19-517944-7) | 2004 |
| The Cross and the Crescent: The Dramatic Story of the Earliest Encounters Between Christians and Muslims | 978-0-14-303481-0 (0-14-303481-2) | 2005 |