353
Sarah Kahn, Wired Telecommunications Carriers in the US, IBISWorld Industry Report 51711c, December 2013, .
354
Business Wire, “GfK MRI: 44% of US Adults Live in Households with Cell Phones but No Landlines,” April 02, 2015, .
355
Greg Johnson, “Ad Revenue Slides for Radio, Magazines,” Los Angeles Times, August 9, 2001, .
356
BIA/Kelsey, “BIA/Kelsey Reports Radio Industry Revenues Rose 5.4% to $14.1 Billion in 2010, Driven by Political Season and More Activity by National Advertisers,” PR Newswire, April 4, 2011, .
