Bruce Hafley. "Joe Guthridge portrait." Georgia Institute of Technology. Library. Archives, Records Management and Digital Curation Department . 1979, http://history.library.gatech.edu/files/original/2008038-004_joe-guthridge_b25b8be196.jpg.

Bruce Hafley (1979). Joe Guthridge portrait. Retrieved from http://history.library.gatech.edu/files/original/2008038-004_joe-guthridge_b25b8be196.jpg

Bruce Hafley. "Joe Guthridge portrait." 1979. July 4, 2025. http://history.library.gatech.edu/files/original/2008038-004_joe-guthridge_b25b8be196.jpg.