Merton, T. (1953). The sign of Jonas ([1st ed.].). Harcourt, Brace.
Lua i Stíl Chicago (17ú heag.)Merton, Thomas. The Sign of Jonas. [1st ed.]. New York: Harcourt, Brace, 1953.
Lua MLA (8ú heag.)Merton, Thomas. The Sign of Jonas. [1st ed.]. Harcourt, Brace, 1953.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.