| title | ISBN-13 | year of publication | |
|---|---|---|---|
| Enterprise.com | 978-0-7382-0226-6 | 1999 | |
| Enterprise.com: Market Leadership In The Information Age | 978-0-7382-0064-4 | 1998 | |
| Enterprise.com: Marktführer werden in der digitalen Welt | 978-3-593-36408-7 | 2000 | |
| Unbridled Passion: Show Jumping's Greatest Horses and Riders | 978-0-9890001-6-1 | 2013 | |
| Unbridled Passions: Show Jumping's Greatest Horses and Riders North America | 978-0-9842173-7-3 | 2011 |
Acanthus Publishing · Campus Verlag · Da Capo Lifelong Books