John Ourand, Terry Lefton. Verizon-NFL Deal: Convergence Is Here // Sports Business Journal, March 15, 2010.
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Данные получены мной из ESPN Sports Poll 2009, Nielsen и OTX Weekly Tracker; обзор их см.: Anita Elberse, Kelsey Calhoun, Daven Johnson. The NFL’s Digital Media Strategy // Harvard Business School, case 511–055.
