Weale, R. A. (1974). Theories of light and colour in relation to the history of painting.
Lua i Stíl Chicago (17ú heag.)Weale, R. A. Theories of Light and Colour in Relation to the History of Painting. London, 1974.
Lua MLA (8ú heag.)Weale, R. A. Theories of Light and Colour in Relation to the History of Painting. 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.