| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| ALL YOU NEED IS GREEN コザイ教授とツギハラ社長が考える「環境と貧困」 ALL YOU NEED IS GREEN kozaikyoujutotsugiharashachougakangaeru「kankyoutohinkon」 | 978-4-06-214774-3 (4-06-214774-2) | 2008 |
| NAKATAビジネス NAKATAbijinesu | 978-4-06-214050-8 (4-06-214050-0) | 2007 |