Não informado. (1955). American Mathematical Society Translations. American Mathematical Society.
Lua i Stíl Chicago (17ú heag.)Não informado. American Mathematical Society Translations. New York: American Mathematical Society, 1955.
Lua MLA (8ú heag.)Não informado. American Mathematical Society Translations. American Mathematical Society, 1955.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.