| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Let's Speak: Cassette Set | 978-962-00-1361-4 (962-00-1361-1) | 2001 | Naoko Ozeki · Kevin Bergman |
| Let's Speak: Teacher's Manual | 978-962-00-1360-7 (962-00-1360-3) | 2001 | Naoko Ozeki · Kevin Bergman |
Bob Kagey · Bob Kashey · Bob Keyes · Bob Koch · Bob Kuska · Bobby Keys