| title | ISBN-13 (ISBN-10) | year of publication | |
|---|---|---|---|
| Action research and organizational change | 978-0-06-318004-8 (0-06-318004-9) | 1972 | |
| Anglo-American Innovation | 978-3-11-010572-8 (3-11-010572-1) | 1987 |
A.C. · A. Clark · P. A. · P. C. · P. Clark · Peter A. · Peter C. · Peter Clark