| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The 2007 Pfeiffer Annual: Human Resource Management | 978-0-7879-8471-7 (0-7879-8471-X) | 2006 |
| The 2009 Pfeiffer Annual: Management Development | 978-0-470-37146-6 (0-470-37146-3) | 2008 |
| THE LEADERSHIP ROAD | 978-1-59526-772-6 (1-59526-772-7) | 2007 |
C.P. · R. C. · R. P. · Robert C. · Robert P.