| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1996 | 978-1-57114-008-1 | Jack W. Plunkett | Corptech Directory of Technology Companies 1996 |
| 1998 | 978-1-57114-014-2 | Deborah Nielsen | Corptech Directory of Technology Companies 1998 |
| 2000 | 978-1-57114-016-6 | Corptech Directory of Technology Companies, 2000 | |