| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Tune in CP Pupil's Book | 978-0-521-69232-8 (0-521-69232-6) | 2006 | Christine B. Bongwa · Martina M. Muyusi · Tohmoh J. Yong |
| Tune in CP Workbook | 978-0-521-69233-5 (0-521-69233-4) | 2007 | Christine B. Bongwa · Martina M. Muyusi · Tohmoh J. Yong |