Não informado. (1921). Digest. International General Electric Company.
Chicagoスタイル(17版)引用形式Não informado. Digest. Schenectady, NY: International General Electric Company, 1921.
MLA(8版)引用形式Não informado. Digest. International General Electric Company, 1921.
警告: この引用は必ずしも正確ではありません.