(1988). Philosophen Lesebuch. Dietz.
Lua i Stíl Chicago (17ú heag.)Philosophen Lesebuch. Berlin: Dietz, 1988.
Lua MLA (8ú heag.)Philosophen Lesebuch. Dietz, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)