Lich, G. E. (1990). Fred Gipson at work. Texas A & M Univ..
Lua i Stíl Chicago (17ú heag.)Lich, Glen E. Fred Gipson at Work. Texas: Texas A & M Univ., 1990.
Lua MLA (9ú heag.)Lich, Glen E. Fred Gipson at Work. Texas A & M Univ., 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.