Daytona 500 (1981-02-15): 11,200,000 average audience, Nielsen (press-attributed), final; published by Wikipedia, 2026-08-27, https://en.wikipedia.org/wiki/List_of_Daytona_500_broadcasters. Via RatingsReference, https://ratingsreference.com/telecast/daytona-500-1981-02-15, accessed 2026-09-15.