| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Second Decision:: the QUALIFIED entrepreneur TM | 978-1-59932-545-3 (1-59932-545-4) | 2015 |
| The Second Decision: the QUALIFIED entrepreneur TM | 978-1-59932-613-9 (1-59932-613-2) | 2015 |
| The Second Decision: the QUALIFIED entrepreneur TM | 978-1-59932-623-8 (1-59932-623-X) | 2015 |