Não informado. (1970). Studies in History and Philosophy of Science. Pergamon Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Studies in History and Philosophy of Science. Oxford, Inglaterra: Pergamon Press, 1970.
Lua MLA (8ú heag.)Não informado. Studies in History and Philosophy of Science. Pergamon Press, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.