T.S. · Taku Sugawara · Toshio Sakurai
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Tekisei zaiko no manejimento | 978-4-526-05401-3 (4-526-05401-1) | 2005 |
| Tekisei zaiko no tekunikku: Suguni jissendekiru genba no tameno zaiko riron APIM | 978-4-526-05629-1 (4-526-05629-4) | 2006 |