M G*** · Max Geller · Max Gloor · Mike Gaylor
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Competitive Edge III: Gravity, Balance, and Kinetics of the Horse and Rider | 978-0-939481-59-0 (0-939481-59-6) | 2000 |
| The Competitive Edge II: Moving Up the Levels | 978-0-939481-30-9 (0-939481-30-8) | 1992 |
| The Competitive Edge: Improving Your Dressage Scores in the Lower Levels | 978-0-939481-43-9 (0-939481-43-X) | 1995 |