Heym, S. Involved writers in the world: Stefan Heym. Radical perspectives in the arts.(1972).
Lua i Stíl Chicago (17ú heag.)Heym, Stefan. "Involved Writers in the World: Stefan Heym." Radical Perspectives in the Arts.(1972) .
Lua MLA (8ú heag.)Heym, Stefan. "Involved Writers in the World: Stefan Heym." Radical Perspectives in the Arts.(1972), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.