| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Birth Order and You | 978-1-55180-245-9 (1-55180-245-7) | 2000 | Dr Ronald W. Richardson |
| Najstarsze srednie najmlodsze | 978-83-87957-10-0 (83-87957-10-0) | 2001 | Ronald W. Richardson |
A. R. · A. Richardson · L a · L. R. · L. Richardson