Farjeon, J. J. (1954). Castle of fear. Crime Club by Collins.
Lua i Stíl Chicago (17ú heag.)Farjeon, J. Jefferson. Castle of Fear. London: Crime Club by Collins, 1954.
Lua MLA (8ú heag.)Farjeon, J. Jefferson. Castle of Fear. Crime Club by Collins, 1954.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.