Não informado. (1938). Frontier. Illinois Institute of Technology.
Chicagoスタイル(17版)引用形式Não informado. Frontier. Chicago, Ill: Illinois Institute of Technology, 1938.
MLA(8版)引用形式Não informado. Frontier. Illinois Institute of Technology, 1938.
警告: この引用は必ずしも正確ではありません.