| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Metodo Practico: Mezzo-Soprano/Baritone - Book/CD | 978-1-4803-0477-2 (1-4803-0477-8) | 1986 | N Vaccai |
| Practical Vocal Method - High Voice: Soprano/Tenor - Book/CD | 978-1-4803-0470-3 (1-4803-0470-0) | 1996 | " |
| Practical Vocal Method - Low Voice: Alto/Bass - Book/CD | 978-1-4803-0484-0 (1-4803-0484-0) | 1996 | " |