Blumenthal, B. (1996). Uriel Birnbaum: Forgotten angel of the sun. Modern Austrian literature.
Lua i Stíl Chicago (17ú heag.)Blumenthal, Bernhardt. "Uriel Birnbaum: Forgotten Angel of the Sun." Modern Austrian Literature 1996.
Lua MLA (8ú heag.)Blumenthal, Bernhardt. "Uriel Birnbaum: Forgotten Angel of the Sun." Modern Austrian Literature, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.