| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Understanding Labor Law | 978-1-63043-013-9 (1-63043-013-7) | 2014 | Douglas E. Ray · Calvin William Sharpe |
| Understanding Labor Law | 978-1-4224-7026-8 (1-4224-7026-1) | 2011 | Douglas E. Ray · Calvin William Sharpe |
n/s · R.N. · R. S. · Robert N. · Robert S.