H.H. · H. Roberts · Holly Harlayne Roberts · Holly Roberts
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Tao Te Ching, the Art and the Journey | 978-0-9754844-1-8 (0-9754844-1-9) | 2005 |
| The Vegetarian Philosophy of India | 978-0-9754844-2-5 (0-9754844-2-7) | 2006 |
| Vegetarian Christian Saints | 978-0-9754844-0-1 (0-9754844-0-0) | 2004 |