| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Eurythmy: Rhythm, Dance and Soul | 978-0-86315-269-6 (0-86315-269-4) | 1998 | |
| Eurythmy: Rhythm, Dance and Soul | 978-0-88010-459-3 (0-88010-459-7) | 1998 | |
| The Influences of Lucifer and Ahriman: Human Responsibility for the Earth | 978-0-88010-375-6 (0-88010-375-2) | 1976 | Rudolf Steiner |