Kepes, G. Sign Image Symbol.
Lua i Stíl Chicago (17ú heag.)Kepes, Gyorgy. Sign Image Symbol.
Lua MLA (8ú heag.)Kepes, Gyorgy. Sign Image Symbol.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)