E Singer · Elisabeth Singer · Elizabeth Schoonmaker · Elizabeth Singer Hunt
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Family Crisis | 978-0-88336-299-0 (0-88336-299-6) | 1990 | Yvette Zgone |
| Problem Solving | 978-0-88336-296-9 (0-88336-296-1) | 1990 | " |