| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Encyclopedia of the World's Zoos: 3-volume set | Digital | 978-1-135-94962-4 | 2016 |
| Encyclopedia of the World's Zoos: 3-volume set | " | 978-1-135-94969-3 | 2016 |
| Encyclopedia of the World's Zoos: 3-volume set | " | 978-1-135-94976-1 | 2016 |
| Encyclopedia of the World's Zoos: 3-volume set | Hardcover | 978-1-57958-174-9 | 2001 |