| title | ISBN-13 | year of publication |
|---|---|---|
| Keiei senryaku no torisetsu toriatsukai setsumeisho: Sekaiichi yasashii: Zukai | 978-4-534-04198-2 | 2007 |
| Problem-solving training ISBN: 4872574338 | 978-4-87257-433-3 | 2004 |
| Senryaku Shikō Torēningu: Kangaeru Chikara Ga Hiyakuteki Ni Appusuru | 978-4-569-66336-4 | 2005 |
| Yoku wakaru purojekuto manejimento | 978-4-534-03066-5 | 2000 |
PHP研究所 (PHPkenkyuujo/kenkyuusho) · イースト・プレス (iーsuto・puresu) · 日本実業出版社 (nihonjitsugyoushuppansha/nipponjitsugyoushuppansha)