| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2009 | 978-0-9824792-0-9 | Susan Rhodes | The Positive Enneagram: A New Approach to the Nine Personality Types |
| 2010 | 978-0-9824792-1-6 | '' | Archetypes of the Enneagram: Exploring the Life Themes of the 27 Enneagram Subtypes from the Perspective of Soul |
| 2013 | 978-0-9824792-2-3 | '' | The Integral Enneagram: A dharma-oriented approach for linking the nine personality types, nine stages of transformation & Ken Wilber's Integral Operating System |