A. o · P. A. · P & · Potter Orfali
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Drug Testing At Work: A Guide for Employers and Employees | 978-1-57951-007-7 (1-57951-007-8) | 1998 |
| Pass the Test: A Guide for Employees | 978-1-57951-008-4 (1-57951-008-6) | 1999 |