Não informado. (1911). Tohoku Mathematical Journal. Tohuko University, Mathematical Institute.
Chicagoスタイル(17版)引用形式Não informado. Tohoku Mathematical Journal. Sendai, Japão: Tohuko University, Mathematical Institute, 1911.
MLA(8版)引用形式Não informado. Tohoku Mathematical Journal. Tohuko University, Mathematical Institute, 1911.
警告: この引用は必ずしも正確ではありません.