| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Counseling at the Workplace | 978-0-07-028785-3 (0-07-028785-6) | 1978 |
| How to Increase Employee Competence | 978-0-07-028790-7 (0-07-028790-2) | 1984 |
C.H. · C. Hill · n/c · N. H. · N. Hill · Norman C · Norman H. · Norman Hill