Roberts, D. (1971). Artistic consciousness and political conscience: The novels of Heinrich Mann 1900 - 1938. Lang.
Lua i Stíl Chicago (17ú heag.)Roberts, David. Artistic Consciousness and Political Conscience: The Novels of Heinrich Mann 1900 - 1938. Berne ; Frankfurt am Main: Lang, 1971.
Lua MLA (8ú heag.)Roberts, David. Artistic Consciousness and Political Conscience: The Novels of Heinrich Mann 1900 - 1938. Lang, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.