Futura Publications · Lothian Books
| title | ISBN-13 (ISBN-10) | year of publication | |
|---|---|---|---|
| Gedanken, die das Herz berühren | 978-3-85022-374-4 (3-85022-374-4) | 2008 | |
| The Complete Numerology of Love | 978-0-7344-0133-5 (0-7344-0133-7) | 2000 | |
| Your Child's Numerology | 978-0-7088-3237-0 (0-7088-3237-7) | 1987 |