| title | ISBN-13 | year of publication |
|---|---|---|
| Let's Keep Talking | 978-9985-71-077-7 | 1998 |
| Password Practice Book 2: Intermediate-A | 978-9985-71-116-3 | 1999 |
| Password Practice Book 2: Intermediate-B | 978-9985-71-119-4 | 1999 |
| Password Practice Book 2: Intermediate-C | 978-9985-71-121-7 | 1999 |
| Password Practice Book 3: Intermediate-A | 978-9985-71-117-0 | 1999 |
| Password Practice Book 3: Intermediate-B | 978-9985-843-84-0 | 1998 |
| Password Practice Book 3: Intermediate-C | 978-9985-843-87-1 | 1999 |
| Password Practice Book 4: Intermediate-A | 978-9985-71-033-3 | 1998 |
| Password Practice Book 4: Intermediate-B | 978-9985-843-85-7 | 1998 |
| Password Practice Book 4: Intermediate-C | 978-9985-843-88-8 | 1998 |