| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| IT Project+ Study Guide | 978-0-7821-4068-2 (0-7821-4068-8) | 2002 | William Heldman · Bill Heldmen |
| Microsoft Office Excel 2007 for Project Managers | 978-0-470-04717-0 (0-470-04717-8) | 2007 | Kim Heldman |
Bil Holton · Bill Haltom · Bill Heldmen · Bill Hilton · Bill Hylton · William Heldman