Não informado. (1974). Communication and broadcasting. Marconi Communication Systems.
Chicagoスタイル(17版)引用形式Não informado. Communication and Broadcasting. Chelmsford, Inglaterra: Marconi Communication Systems, 1974.
MLA(8版)引用形式Não informado. Communication and Broadcasting. Marconi Communication Systems, 1974.
警告: この引用は必ずしも正確ではありません.