| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Brain Flexers: Games and Activities to Strengthen Memory | 978-1-938870-37-8 (1-938870-37-9) | 2015 | Kristin Einberger |
| Strengthen Your Mind Program | 978-1-932529-55-5 (1-932529-55-1) | 2009 | " |
| Strengthen Your Mind Vol.2 | 978-1-932529-42-5 (1-932529-42-X) | 2008 | " |