Não informado. (1921). Science reports of the Tohoku University. Tohoku University, Faculty of Science.
Lua i Stíl Chicago (17ú heag.)Não informado. Science Reports of the Tohoku University. Sendai, Japão: Tohoku University, Faculty of Science, 1921.
Lua MLA (8ú heag.)Não informado. Science Reports of the Tohoku University. Tohoku University, Faculty of Science, 1921.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.