H.A. · Hill A · Hill Associates Inc. · Napoleon Hill Associates
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Expertech 2.0 - Ethernet Fundamentals | 978-1-930760-19-6 (1-930760-19-1) | 2007 |
| ExperTech 2.0 - Telephony Fundamentals | 978-1-930760-17-2 (1-930760-17-5) | 2007 |