Não informado. (1963). Boston Studies in the Philosophy of Science. Kluwer Academic Publishers.
Lua i Stíl Chicago (17ú heag.)Não informado. Boston Studies in the Philosophy of Science. Dordrecht, Holanda: Kluwer Academic Publishers, 1963.
Lua MLA (8ú heag.)Não informado. Boston Studies in the Philosophy of Science. Kluwer Academic Publishers, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.