Não informado. (1921). Science reports of the Tohoku University. Tohoku University, Faculty of Science.
Chicago-Zitierstil (17. Ausg.)Não informado. Science Reports of the Tohoku University. Sendai, Japão: Tohoku University, Faculty of Science, 1921.
MLA-Zitierstil (8. Ausg.)Não informado. Science Reports of the Tohoku University. Tohoku University, Faculty of Science, 1921.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.