| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1987 | 978-0-933267-02-2 | Barbara Ray · Marvelle Carter | The Expanded Reference Manual of the Radiance Technique / Authentic Reiki |
| 1992 | 978-0-933267-06-0 | Barbara Ray | The 'Reiki' Factor in The Radiance Technique(R), Expanded Edition |
| 1994 | 978-0-933267-08-4 | '' | The Radiance Technique(R), Authentic Reiki(R) -- Managing Stress |
| '' | 978-0-933267-09-1 | Katherine Lenel | The Radiance Technique(R) and Cancer |
| 1995 | 978-0-933267-11-4 | Barbara Ray · Margarete Keppel · Ulrike Wolf | The Authentic Reiki(R) (Das Authentische Reiki), Der ,Reiki' Faktor in Der Radiance |
| 2002 | 978-0-933267-12-1 | Barbara Ray | This Moment in Time: The Awakening Journey® Day by Day: Selections from the teachings of Dr. Barbara Ray/Dr. SunRay/Joyous Sun Ray |