O's ยท Osamu Saito
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Digital Economy and Social Design | 978-4-431-54639-9 (4-431-54639-1) | 2014 |
| Digital Economy and Social Design | 978-4-431-80023-1 (4-431-80023-9) | 2008 |
| Digital Economy And Social Design | 978-4-431-25467-6 (4-431-25467-6) | 2005 |