| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| A Guide to the 2002 Revision of the American Psychological Association's Ethics Code | 978-1-56887-079-3 (1-56887-079-5) | 2003 | Samuel Knapp |
| Law & Mental Health Professionals: Ohio | 978-1-59147-205-6 (1-59147-205-9) | 2005 | Marshall B. Kapp |
L.D. · L.P. · Leon D. · Leon D. Vandecreek · Leon VandeCreek · P. V. · Ph.D.