| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Intl Labor & Employment Laws, V-1, 2nd Edition, 2007 Supplement | 978-1-57018-634-9 (1-57018-634-0) | 2008 |
| Intl Labor & Employment Laws, V-2, 2nd Edition, 2007 Supplement | 978-1-57018-635-6 (1-57018-635-9) | 2008 |
k.A. · L. Keller · W K. · W Keller · William A. · William Keller · William L.