Study: Today’s PG-13 movies more violent than ’80s R-related movies (Inquirer.com, November 11th, 2013)
New study shows PG-13 movies have more of the gun violence families love than R-rated ones (A.V. Club, November 11th, 2013)
Gun violence worse in PG-13 films than in R-rated films, study says (The Los Angeles Times, November 11th, 2013)