| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Certification Guide | 978-1-58644-023-7 (1-58644-023-3) | 2002 | Raymond B. Weinberg |
| HRCI Certification Guide | 978-1-58644-064-0 (1-58644-064-0) | 2005 | |
| HRCI Certification Guide | 978-1-58644-050-3 (1-58644-050-0) | 2004 | |