| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2005 | 978-0-9763159-0-2 | Mary Bast · Clarence Thomson | Out of the Box: Coaching with the Enneagram |
| '' | 978-0-9763159-2-6 | Ph.D. Mary R. Bast | Out of the Box Coaching Field Guide |
| 2007 | 978-0-9763159-3-3 | Mary Bast · Cristina Favreau | Out of the Box Self-Coaching Workbook |