(1974). Man and his personal freedom ; Responsibility and creativity in art anf literature ; Problems of determinism ; The future of philosophy. Sofia Pr..
Lua i Stíl Chicago (17ú heag.)Man and His Personal Freedom ; Responsibility and Creativity in Art Anf Literature ; Problems of Determinism ; The Future of Philosophy. Sofia: Sofia Pr., 1974.
Lua MLA (8ú heag.)Man and His Personal Freedom ; Responsibility and Creativity in Art Anf Literature ; Problems of Determinism ; The Future of Philosophy. Sofia Pr., 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.