| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2002 | 978-0-9721780-0-6 | Bill Harris | Thresholds of the Mind |
| 2007 | 978-0-9721780-1-3 | Bill Harris | Thresholds of the Mind |
| '' | 978-0-9721780-2-0 | '' | Managing Evolutionary Growth; How to Create Deep Change Without Falling Apart |