| title | ISBN-13 | year of publication |
|---|---|---|
| 助詞で変わるあなたの日本語 - All About Particles joshidega/ | 978-4-7700-2781-8 | 2001 |
| 日本語の動詞 【新装版】 - Japanese Verbs at a Glance nihongo/ | 978-4-7700-2765-8 | 2001 |
| 日本語基本文型辞典―A Kodansha dictionary nihongo/ | 978-4-7700-2608-8 | 2000 |
| 比べて分かる日本語の助詞 - How to Tell the Difference between Japanese Particles kurabetewakarunihongo/ | 978-4-7700-2200-4 | 2005 |