Bellman, R. E. A collection of modern mathematical classics. Dover Publications.
Lua i Stíl Chicago (17ú heag.)Bellman, Richard Ernest. A Collection of Modern Mathematical Classics. New york: Dover Publications.
Lua MLA (9ú heag.)Bellman, Richard Ernest. A Collection of Modern Mathematical Classics. Dover Publications.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.