Butlin, M. (1978). William blake. Tate Gallery.
Lua i Stíl Chicago (17ú heag.)Butlin, Martin. William Blake. London: Tate Gallery, 1978.
Lua MLA (9ú heag.)Butlin, Martin. William Blake. Tate Gallery, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.