| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Focus Groups: Theory and Practice | Hardcover | 978-0-7619-2582-8 (0-7619-2582-1) | 2006 | David W. Stewart · Dennis Rook |
| Focus Groups: Theory and Practice | Paperback | 978-0-7619-2583-5 (0-7619-2583-X) | 2006 | David W. Stewart · Dennis Rook |
| Focus Groups: Theory and Practice | " | 978-0-8039-3390-3 (0-8039-3390-8) | 1990 | David W. Stewart |