Ritter, R. Das Theater K: Roman Ritter. [Kürbiskerne, 2].(1977).
Lua i Stíl Chicago (17ú heag.)Ritter, Roman. "Das Theater K: Roman Ritter." [Kürbiskerne, 2].(1977) .
Lua MLA (8ú heag.)Ritter, Roman. "Das Theater K: Roman Ritter." [Kürbiskerne, 2].(1977), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.