Cooper, M., & Chalfant, H. (1984). Subway Art.
Lua i Stíl Chicago (17ú heag.)Cooper, Martha, agus Henry Chalfant. Subway Art. London, 1984.
Lua MLA (8ú heag.)Cooper, Martha, agus Henry Chalfant. Subway Art. 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.