| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Annual Report of the Colorado Tax Commission to the Governor, Treasurer, and Legislature; Volume 1 | 978-1-377-66732-4 (1-377-66732-4) | 2018 |
| Annual Report of the Colorado Tax Commission to the Governor, Treasurer, and Legislature; Volume 6 | 978-1-377-66937-3 (1-377-66937-8) | 2018 |