| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Eight Stages of Christian Growth: Human Development in Psycho-Spiritual Terms | 978-0-13-246661-5 (0-13-246661-9) | 1985 |
| Eight stages of Christian growth: Human development in psycho-spiritual terms | 978-0-13-246679-0 (0-13-246679-1) | 1984 |