Davis, B. (1989). German expressionist prints and drawings. Prestel.
Lua i Stíl Chicago (17ú heag.)Davis, Bruce. German Expressionist Prints and Drawings. München: Prestel, 1989.
Lua MLA (8ú heag.)Davis, Bruce. German Expressionist Prints and Drawings. Prestel, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.