| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Playground Safety | 978-0-88314-392-6 (0-88314-392-5) | 1988 | S.J. Langendorfer |
| Play Spaces for Children: A New Beginning | 978-0-88314-391-9 (0-88314-391-7) | 1988 | |
| Where Our Children Play: Elementary School Playground Equipment | 978-0-88314-390-2 (0-88314-390-9) | 1988 | |