| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Love Is a Choice | 978-0-8407-7171-1 (0-8407-7171-1) | 1989 | Robert, Dr. Hemfelt · Paul, Dr. Meier · Frank B. Minirth · Paul D. Meier |
| The Headache Book | 978-0-7852-8256-3 (0-7852-8256-4) | 1994 | Sandy Dengler |