Arnheim Rudolf. (1997). Visual Thinking. Rautlege.
Lua i Stíl Chicago (17ú heag.)Arnheim Rudolf. Visual Thinking. Routlege: Rautlege, 1997.
Lua MLA (9ú heag.)Arnheim Rudolf. Visual Thinking. Rautlege, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.