D.A. · Donald A. · DONALD L. AVILA, WILLIAM W. PURKEY ARTHUR W. COMBS · L a
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Helping Relationships: Basic Concepts for the Helping Professionals | 978-0-205-08250-6 | 1984 | Arthur W. Combs |
| Helping relationships: basic concepts for the helping professions | 978-0-02-050595-2 | 1978 | Arthur W. Combs · William W. Purkey |
| Helping relationships: Basic concepts for the helping professions | 978-0-205-05959-1 | 1978 | Arthur W. Combs · William W. Purkey |
| Perspectives on Helping Relationships and the Helping Professions: Past, Present and Future | 978-0-205-08325-1 | 1985 | Arthur W. Combs |
| The Helping Relationship Sourcebook | 978-0-205-05843-3 | 1977 | |