Tolstoi, A. (1966). Ordeal a trilogy Book III Bleak Morning. Progress publishers.
Lua i Stíl Chicago (17ú heag.)Tolstoi, Alexei. Ordeal a Trilogy Book III Bleak Morning. London: Progress publishers, 1966.
Lua MLA (9ú heag.)Tolstoi, Alexei. Ordeal a Trilogy Book III Bleak Morning. Progress publishers, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.