| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Four Psychologies Applied to Education: Freudian, Behavioral, Humanistic, Transpersonal | 978-0-470-72586-3 (0-470-72586-9) | 1975 | |
| Spiritual Growth with Entheogens: Psychoactive Sacramentals and Human Transformation | 978-1-59477-439-3 (1-59477-439-0) | 2012 | Brother David Steindl-Rast · Roger Walsh |
| The Psychedelic Policy Quagmire: Health, Law, Freedom, and Society | 978-1-4408-3970-2 (1-4408-3970-0) | 2015 | J. Harold Ellens |
B. Roberts · R. P. · T. B. · T.P · T. R. · T. Roberts · Thomas B. · Thomas B. Roberts · Thomas P. · Thomas R. · Thomas Roberts