| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| A Ghibelline interpretation of Dante's enigma forte and John's Apocalyptic 666 | 978-0-646-29739-2 (0-646-29739-2) | 1996 |
| Musical culture of the Guelphs and the Ghibellines | 978-0-646-36761-3 (0-646-36761-7) | 1998 |