Não informado. (2021). Engineering Index Monthly and Author Index. Engineering Index.
Chicagoスタイル(17版)引用形式Não informado. Engineering Index Monthly and Author Index. New York: Engineering Index, 2021.
MLA(8版)引用形式Não informado. Engineering Index Monthly and Author Index. Engineering Index, 2021.
警告: この引用は必ずしも正確ではありません.