Cambridge University Press · Liverpool University Press · University of Michigan Press
| title | ISBN-13 | year of publica- tion |
|---|---|---|
| Christian Martyrs in Muslim Spain | 978-0-521-34416-6 | 1987 |
| Conquerors and Chroniclers of Early Mediaeval Spain | 978-0-85323-554-5 | 1999 |
| Conquerors and Chroniclers of Early Mediaeval Spain | 978-0-85323-047-2 | 1991 |
| The Deeds of Count Roger of Calabria and Sicily and of His Brother Duke Robert Guisc | 978-0-472-11459-7 | 2005 |