| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Volare - Level 10: Libro Per Lo Studente 1 | 978-88-7223-O3O-5 (88-7223-O3O-6) | Christopher Humphris · Piero Catizoni · Luigi Micarelli · P Catizoni · L Micarelli |
C.H. · Christopher Humphris · Clive W. Humphris · Colin Humphris