Healy, R. (1957). Famous science fiction stories. Random House.
Lua i Stíl Chicago (17ú heag.)Healy, R. Famous Science Fiction Stories. New York: Random House, 1957.
Lua MLA (9ú heag.)Healy, R. Famous Science Fiction Stories. Random House, 1957.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.