| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Lingua TOEFL CBT INSIDER: The Super Guide | 978-89-5563-005-3 | 2003 | Lingua Forum |
| Lingua TOEFL CBT Listening Practice Test 1-4 | 978-89-89260-92-9 | 2003 | " |
| Lingua TOEFL CBT TEST BOOK II: Practice Test 7-12 | 978-89-89260-20-2 | 2003 | " |
| Lingua TOEFL CBT TEST BOOK I: Practice Test 1-6 | 978-89-89260-91-2 | 2003 | " |
F.T. · L. R. · Lingua Forum · R. T. · Research Team