Eastin, M S., & Greenberg, B S. (2001). The onset of the age-based and content-based ratings system: History, pressure groups, Congress and the FCC. The alphabet soup of television program ratings..

"The onset of the age-based and content-based ratings system : History, pressure groups, Congress and the FCC" The Alphabet Soup of Television Program Ratings. .

Eastin, Matthew S., and Bradley S. (Hrsg.) Greenberg. "The Onset of the Age-based and Content-based Ratings System: History, Pressure Groups, Congress and the FCC." The Alphabet Soup of Television Program Ratings. 2001.