Robert M. Utley · Robert Marshall Utley
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Billy the Kid: A Short and Violent Life | 978-1-86064-601-0 (1-86064-601-8) | 2000 |
| Billy the Kid: A Short and Violent Life | 978-1-4223-6348-5 (1-4223-6348-1) | 1905 |
| The Lance and the Shield | 978-0-345-38938-1 (0-345-38938-7) | 1994 |
Ballantine Books · I.B. Tauris · Various small imprints