↑Certaines sources d'État reconnaissent sa naissance en 1945, mais la sécurité sociale reconnaît sa naissance en 1944. Voir: Gary R Stewart birth record, Commonwealth of Kentucky, vol. 061, certificate number 30044, 1944.
(en) Vladimir Bogdanov, All Music Guide to Country: The Definitive Guide to Country Music, San Francisco, Backbeat Books, , 2eéd., 963p. (ISBN978-0-87930-760-8, LCCN2003062827), p.721–722
(en) Andrew Dansby, «Country Singer Stewart Dead: Seventies star fused southern rock and honky-tonk», Rolling Stone, (lire en ligne, consulté le )
(en) David DeVoss, «A Honky-Tonk Man», Time, New York, (lire en ligne, consulté le )
Chet Flippo, «Honky-Tonk Singer Gary Stewart Dies: Out of Hand country rocker apparently committed suicide», CMT.com, (lire en ligne, consulté le )
(en) Bill C. Malone, Don't Get Above Your Raisin': Country Music and the Southern Working Class, Urbana, University of Illinois Press, , 392p., poche (ISBN978-0-252-07366-3), p.363
(en) Jim Miller, «Gary Stewart: Out of Hand», Rolling Stone, no190, (lire en ligne, consulté le )
Charles Passy, «The Ballad of Gary & Mary Lou: Gary Stewart was a Hard-Partying Country Star, the King of Honky-Tonk, but it was his Devoted Lou Who Kept His Life Together, and When She Died, He Just Couldn't Go On», Palm Beach Post, (lire en ligne, consulté le )
(de) Irwin Stambler, Country Music: The Encyclopedia, New York, St. Martin's Press, , 1reéd., 708p., relié (ISBN978-0-312-15121-8), p.464–465