Asahi Shimbun · 日本実業出版社 (nihonjitsugyoushuppansha/nipponjitsugyoushuppansha)
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Jubai mokaru tsuhan bijinesu no himitsu: tsuhan no jou ga hajimete akasu | 978-4-534-04135-7 (4-534-04135-7) | 2006 |
| Work go well 90% When you throw away 80% ISBN: 4023308315 | 978-4-02-330831-2 (4-02-330831-5) | 2010 |