| title | media type | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Group Process as a Helping Technique | Paperback | 978-0-08-016219-5 | 1970 | Jack Kahn |
| Group Process as a Helping Technique | Hardcover | 978-0-08-016220-1 | 1970 | " |
| Koinonia: From Hate, through Dialogue, to Culture in the Larger Group | " | 978-0-367-32528-2 | 2019 | Patrick B. De Mare · Robin Piper |
| The Group Process and Family Therapy: Extensions and Applications of Basic Principles | " | 978-0-08-034787-5 | 1987 | Jack Kahn |