C.F. · Chris Fareham · Chris Fareham David Evans
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Powerbase | 978-0-582-49756-6 (0-582-49756-6) | 2002 |
| Powerbase | 978-0-582-49753-5 (0-582-49753-1) | 2001 |
| Powerbase Elementary Coursebook and Audio CD Pack | 978-0-582-49755-9 (0-582-49755-8) | 2002 |