Bantam Press · Droemer Knaur · Prometheus Books
| title | ISBN-13 (ISBN-10) | year of publica- tion | |
|---|---|---|---|
| Im Namen des Papstes | 978-3-426-77312-3 (3-426-77312-0) | 1998 | |
| THE POPE'S ARMADA: UNLOCKING THE SECRETS OF MYSTERIES AND POWERFUL NEW SECTS IN THE CHURCH | 978-0-593-03388-3 (0-593-03388-4) | 1995 | |
| The Pope's Armada: Unlocking the Secrets of Mysterious and Powerful New Sects in the Church | 978-1-57392-699-7 (1-57392-699-X) | 1999 |