| title | ISBN-13 | year of publication |
|---|---|---|
| The 3-Dimensional Business Voice Tape | 978-0-9669883-4-5 | 2003 |
| The 3-Dimensional Business Voice: The Voice of Command | 978-0-9669883-1-4 | 2001 |
| The 3-Dimensional Voice: A Fun & Easy Method of Voice | 978-0-9669883-0-7 | 2000 |
| The 3-Dimensional Voice Exercise Tape | 978-0-9669883-2-1 | 2003 |
| The 3-Dimensional Voice For Life | 978-0-9669883-7-6 | 2003 |
| The Young 3-Dimensional Voice | 978-0-9669883-8-3 | 2003 |