"The Dual Network Rule.Arquivado 03 de decembro de 2010 en Wayback Machine.", Federal Communications Commission (15 de maio de 2001): "the four major broadcast networks are unique among the media in their ability to reach a wide audience"
"The Dual Network Rule.Arquivado 03 de decembro de 2010 en Wayback Machine.", Federal Communications Commission (15 de maio de 2001): "the four major broadcast networks are unique among the media in their ability to reach a wide audience"