| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Fuhen no maketingu. | 978-4-89451-605-2 | 2014 | |
| Seikōsha No Kokuhaku: Gonenkan No Kigyō Nōhau O Sanjikan De Manaberu Sutōrī | 978-4-06-281053-1 | 2006 | |
| Star Power to Super Success = Jinsei o seiko ni michibiku hoshi no oshie | 978-4-408-39535-7 | 2004 | Raim |
| Tanoshii shigoto: Asu kara yaruki ga wakideru shinrigaku: Naze hataraitemo tasseikan ga nainoka | 978-4-8334-5020-1 | 2006 | |
フォレスト出版 (fuoresutoshuppan) · 実業之日本社 (jitsugyounonihonsha/jitsugyounonipponsha) · 講談社 (koudansha)