C.S. · Church of Scientology · O.I. · O's
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Scientology: Lehre und Ausübung einer modernen Religion | 978-87-7816-570-1 (87-7816-570-9) | 1998 |
| What Is Scientology?: Based on the Works of L. Ron Hubbard | 978-1-57318-078-8 (1-57318-078-5) | 1993 |