| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Understanding Multi-Level Commissions and Their Role in a Successful Company | 978-0-9717536-1-7 (0-9717536-1-X) | 2008 |
| Understanding Multi-Level Commissions and Their Role in a Successful Company | 978-0-9717536-0-0 (0-9717536-0-1) | 2002 |