| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| 21st Century Supervisor | 978-0-7879-4684-5 (0-7879-4684-2) | 1999 | |
| The 21st Century Supervisor: Participant's Workbook and Supervisor 3600 Skill Assessment - Self: Nine Essential Skills for Frontline Leaders | 978-0-7879-5054-5 (0-7879-5054-8) | 2000 | Jeff Stokes |