Freeman, J. Ernst Bloch and Hugo Ball: Toward an ontology of the avant-garde / Joel Freeman. Dada culture : critical texts on the Avant-garde.(2006).
Lua i Stíl Chicago (17ú heag.)Freeman, Joel. "Ernst Bloch and Hugo Ball: Toward an Ontology of the Avant-garde / Joel Freeman." Dada Culture : Critical Texts on the Avant-garde.(2006) .
Lua MLA (8ú heag.)Freeman, Joel. "Ernst Bloch and Hugo Ball: Toward an Ontology of the Avant-garde / Joel Freeman." Dada Culture : Critical Texts on the Avant-garde.(2006), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.