Não informado. (1948). Quarterly Journal of Mechanics and Applied Mathematics. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Quarterly Journal of Mechanics and Applied Mathematics. Oxford, Inglaterra: Oxford University Press, 1948.
Lua MLA (8ú heag.)Não informado. Quarterly Journal of Mechanics and Applied Mathematics. Oxford University Press, 1948.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.