| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Italia Romantica: English Romantics and Italian Freedom | 978-1-85043-426-9 (1-85043-426-3) | 2005 |
| The Last of the Crusaders: The Knights of St John and Malta in the Eighteenth Century | 978-1-84511-729-0 (1-84511-729-8) | 2008 |