Harvard University Press · National Geographic Children's Books
| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Face to Face with Frogs | 978-1-4263-0205-3 (1-4263-0205-3) | 2008 |
| The High Frontier: Exploring the Tropical Rainforest Canopy | 978-0-674-39039-3 (0-674-39039-3) | 1994 |