Wolfgang Hölzel · Wolfgang Hölzl
Kenilworth Press Ltd · Trafalgar Square Books
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Dressage Tips and Training Solutions | 978-1-872119-35-9 (1-872119-35-2) | 2006 | Petra Holzel · Martin Plewa |
| Dressage Tips and Training Solutions | 978-1-57076-207-9 (1-57076-207-4) | 2001 | Petra Holzel · Martin Plewa · Petra |
| Learn to Ride Using Sports Psychology | 978-1-872082-86-8 (1-872082-86-6) | 1998 | Petra Holzel |