Não informado. (1955). American Mathematical Society Translations. American Mathematical Society.
Chicagoスタイル(17版)引用形式Não informado. American Mathematical Society Translations. New York: American Mathematical Society, 1955.
MLA(8版)引用形式Não informado. American Mathematical Society Translations. American Mathematical Society, 1955.
警告: この引用は必ずしも正確ではありません.