| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Compass American Guides: Montana, 5th Edition | 978-0-676-90133-7 (0-676-90133-6) | 2002 |
| Compass American Guides: Montana, 6th Edition | 978-1-4000-1662-4 (1-4000-1662-2) | 2006 |
| Introduction to Montana | 978-962-217-205-0 (962-217-205-9) | 1992 |