| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Sources of Information on Play and Recreation: Lee F. Hanmer, Howard R. Knight | 978-1-112-18442-0 (1-112-18442-2) | 2009 |
| The Gary Public Schools: Physical Training and Play | 978-1-112-58837-2 (1-112-58837-X) | 2009 |