Koestler, A. (1965). Darkness at noon. Jonathan Cape.
Lua i Stíl Chicago (17ú heag.)Koestler, Arthur. Darkness at Noon. London: Jonathan Cape, 1965.
Lua MLA (9ú heag.)Koestler, Arthur. Darkness at Noon. Jonathan Cape, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.