Dienstag, J. F. (2006). Pessimism: Philosophy, ethic, spirit. Princeton University Press.
Lua i Stíl Chicago (17ú heag.)Dienstag, Joshua Foa. Pessimism: Philosophy, Ethic, Spirit. Princeton, N.J.: Princeton University Press, 2006.
Lua MLA (9ú heag.)Dienstag, Joshua Foa. Pessimism: Philosophy, Ethic, Spirit. Princeton University Press, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.