Não informado. (1909). Telephone engineer and management. Advanstar Communications.
Chicagoスタイル(17版)引用形式Não informado. Telephone Engineer and Management. Chicago, Ill: Advanstar Communications, 1909.
MLA(8版)引用形式Não informado. Telephone Engineer and Management. Advanstar Communications, 1909.
警告: この引用は必ずしも正確ではありません.