Gun violence in PG-13 movies has more than tripled since 1985: Study (New York Daily News, November 11th, 2013)
Gun Violence in Top-Grossing PG-13 Films Exceeds R-rated Ones (WSJ.com Speakeasy blog, November 11th, 2013)
Study finds gun violence in PG-13 movies has tripled since 1985 (Al Jazeera America, November 11th, 2013)
Gun Violence in PG-13 Movies Has More Than Tripled Since 1985 (Study (The Hollywood Reporter, November 11th, 2013)