| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Viking Serpent: Secrets of the Celtic Church in Norway Their Serpent Worship and Sacred Pentagram Geometry | 978-1-412O-9755-O (1-412O-9755-X) | 2007 |
H. B · Harald Bläske · Harold Balazs · Harold Balyoz · Harold Bolce