| title | ISBN-13 | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Kuroi RJU Ninjitsu | 978-3-936457-06-3 | 2003 | Andreas Leffler | |
| Ninja Death Touch | 978-0-87364-528-7 | 1989 | ||
| Ninja Mind Control | 978-0-425-09894-3 | 1987 | ||
| Ninja Secrets of Invisibility | 978-0-425-08788-6 | 1986 | ||
| Secrets Of The Ninja | 978-0-425-08391-8 | 1985 | ||
Berkley · Leffler, A · Paladin Press