| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2001 | 978-0-9540130-0-4 | Bob Hughes | The First Claim: A Framework for Playwork Quality Assessment |
| 2007 | 978-0-9540130-2-8 | Fraser Brown · Malcolm King · Ben Tawil | The Venture: A Case Study of an Adventure Playground |