| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Passport to German | 978-0-529-00503-8 (0-529-00503-4) | 1972 |
| Passport to Italian | 978-0-529-00504-5 (0-529-00504-2) | 1972 |
| Passport to Spanish | 978-0-529-00502-1 (0-529-00502-6) | 1972 |
C B · C.F. · Charles B. · Charles Bertin · Charles F.