Continuum · HarperCollins · Jaguar Books
| title | ISBN-13 | year of publica- tion | |
|---|---|---|---|
| Die Kelten. Weisheit und Mythos | 978-3-8289-0750-8 | 2000 | |
| Here Be Dragons: Mythical Beasts in Ancient Legend and Modern Myth | 978-1-4411-4849-0 | 2012 | |
| Los Celtas | 978-84-89960-39-8 | 1999 | |
| The Celts with Other | 978-0-00-764059-1 | 2002 |