Gilson, E. (1940). The spirit of medieval philosophy: (Gifford lectures 1931-1932). Charles scribners.
Lua i Stíl Chicago (17ú heag.)Gilson, Etienne. The Spirit of Medieval Philosophy: (Gifford Lectures 1931-1932). New York: Charles scribners, 1940.
Lua MLA (9ú heag.)Gilson, Etienne. The Spirit of Medieval Philosophy: (Gifford Lectures 1931-1932). Charles scribners, 1940.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.