Não informado. (2019). The Engineering Index. Engineering Magazine.
Chicagoスタイル(17版)引用形式Não informado. The Engineering Index. New York: Engineering Magazine, 2019.
MLA(8版)引用形式Não informado. The Engineering Index. Engineering Magazine, 2019.
警告: この引用は必ずしも正確ではありません.