| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| これで絶対聞き取れる!TOEIC TEST速聴速解リスニング koredezettaikikitoreru!TOEIC TESTbaya/ | 978-4-05-401277-6 (4-05-401277-9) | 2000 |
| これで絶対読み解ける!TOEIC TEST速読速解リーディング koredezettaiyomitokeru!TOEIC TESTsokudokubaya/ | 978-4-05-401377-3 (4-05-401377-5) | 2001 |