Baumeister, W. (1996). The Unknown in Art (1947). Theories and documents of contemporary art : A Sourcebook of Artists' Writings.
Lua i Stíl Chicago (17ú heag.)Baumeister, Willi. "The Unknown in Art (1947)." Theories and Documents of Contemporary Art : A Sourcebook of Artists' Writings 1996.
Lua MLA (8ú heag.)Baumeister, Willi. "The Unknown in Art (1947)." Theories and Documents of Contemporary Art : A Sourcebook of Artists' Writings, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.