Não informado. (1921). Contribution from the Institute of Geology and Paleontology. Tohoku University.
Lua i Stíl Chicago (17ú heag.)Não informado. Contribution from the Institute of Geology and Paleontology. Sendai, Japão: Tohoku University, 1921.
Lua MLA (8ú heag.)Não informado. Contribution from the Institute of Geology and Paleontology. Tohoku University, 1921.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.