Não informado. (1943). Mathematical surveys. American Mathematical Society.
Lua i Stíl Chicago (17ú heag.)Não informado. Mathematical Surveys. New York: American Mathematical Society, 1943.
Lua MLA (8ú heag.)Não informado. Mathematical Surveys. American Mathematical Society, 1943.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.