Independently published · Nabu Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Rangers and Sovereignty | 978-1-5499-5295-1 (1-5499-5295-1) | 2017 |
| Rangers and Sovereignty | 978-1-146-53129-0 (1-146-53129-X) | 2010 |
(D-R) · D. Roberts · D.W. · D. W. Roberts · Dan Roberts · W R. · W. Roberts