| title | ISBN-13 | year of publication |
|---|---|---|
| LinguaForum TOEFL iBT Core Topic Guide Vol. 1: History & The Arts | 978-89-5563-081-7 | 2006 |
| LinguaForum TOEFL iBT Core Topic Guide Vol. 2: Social Sciences | 978-89-5563-086-2 | 2007 |
| LinguaForum TOEFL iBT Core Topic Guide Vol. 3: Biology, Archeology & Anthropology | 978-89-5563-091-6 | 2007 |
| LinguaForum TOEFL iBT Core Topic Guide Vol. 4: Empirical Sciences | 978-89-5563-108-1 | 2007 |
| LinguaForum TOEFL iBT Insider: The Super Guide: includes 6 audio CDs and practice test CD-ROM | 978-89-5563-172-2 | 2008 |
| LinguaForum TOEFL iBT Intro Vocabulary: 1500 essential words you need to know for the TOEFL iBT | 978-89-5563-082-4 | 2007 |
| LinguaForum TOEFL iBT Test Book 1: 2 complete practice tests | 978-89-5563-116-6 | 2007 |