Não informado. (1962). History of Science. Science History Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. History of Science. Bucks, Inglaterra: Science History Publications, 1962.
Lua MLA (8ú heag.)Não informado. History of Science. Science History Publications, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.