| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Phenomenal: A Hesitant Adventurer’s Search for Wonder in the Natural World | 978-1-59420-471-5 (1-59420-471-3) | 2015 |
| Phenomenal: A Hesitant Adventurer's Search for Wonder in the Natural World | 978-1-61176-365-2 (1-61176-365-7) | 2015 |