| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2013 | 978-0-9895390-0-5 | J W DuVall | DUVALL'S Master Study Guide Series United States Tax Code Encyclopedia P-15 2013: Circular E Employers Tax Guide Publication 15 Encyclopedia of IRS ... (DUVALLS IRS TAX LAW SERIES) (Volume 1) |
| '' | 978-0-9895390-1-2 | James W DuVall | DUVALLS OSHA 1926 C Instructors Manual 2014 Edition: General Safety and Health Provisions |
| '' | 978-0-9895390-2-9 | J W Du VALL | DUVALL'S Master Study Guide Series 29 CFR OSHA PART 1903: Inspections, Citations, Proposed Penalties and Administrative Penalty Information (DUVALLS 29 CFR OSHA PART 1903 Instructors Manual) |