| Birmingham, Gil. Gil Birmingham: the Official Website of Actor Gil Birmingham. URL: http://gilbirmingham.wix.com/gilbirmingham. 2016. | | 2016 | Actor's official website (viewed August 24, 2016) | View |
| IMDb contributors. "Gil Birmingham, Actor, Miscellaneous Crew". In: IMDb (http://www.imdb.com/). URL: http://www.imdb.com/name/nm0083655/. 2016. | | 2016 | Gil Birmingham in the Internet Movie Database (viewed August 24, 2016) | View |
| Leydon, Joe. "Hell or High Water: Native Actor Gil Birmingham Partners with Jeff Bridges in a Western Heist Story". Cowboys & Indians, vol. 24, no. 7 (October 2016). 2016. | 142-146 | 2016 | | |
| Leydon, Joe and Robert Lynden (photographer). "Gil Birmingham: He's Worn Many Hats, but His Latest Acting Highlights Are Contributing to a Stunning Career Renaissance". Cowboys & Indians, vol. 26, no. 6 (August/September 2018). 2018. | 74-83 | 2018 | Cover story; portrait of Gil Birmingham on cover. | |
| Pond, Roscoe. "Through the Kindness of Strangers". Indian Country Today, April 2, 2003. 4/2/2003. | D1, D2 | 4/2/2003 | | |
| Tahmahkera, Dustin. Cinematic Comanches: the Lone Ranger in the Media Borderlands. Lincoln, Nebraska: University of Nebraska Press. 2022. | 106, 110-111, 168+ | 2022 | Consult index term "Birmingham, Gil" on page 250 for additional pages containing information about Gil Birmingham. | Includes filmography (pages 243-248), bibliographical references (pages 195-242) and index. | |
| Wikipedia contributors. "Gil Birmingham". In: Wikipedia, the Free Encyclopedia (host URL: https://en.wikipedia.org/) at source URL: https://en.wikipedia.org/wiki/Gil_Birmingham. 2016. | | 2016 | Current entry on Gil Birmingham in Wikipedia (viewed July 30, 2018) | View |