| title | media type | ISBN-13 | year of publica- tion | other author(s) | |
|---|---|---|---|---|---|
| Politik im Blick, Arbeitsheft | Taschenbuch | 978-3-8237-7702-1 | 1999 | ||
| Politik im Blick, Lehrbuch | " | 978-3-8237-7701-4 | 1998 | ||
| The Best of the Old West | Paperback | 978-1-4184-3322-2 | 2005 | Dennis Ruff | |
| The Best of the Old West | Hardcover | 978-1-4208-2835-1 | 2005 | " | |
| The Quest of Ages | Paperback | 978-1-4184-8420-0 | 2005 | ||
| The Quest of Ages | Hardcover | 978-1-4184-8421-7 | 2005 | Dennis Ruff | |