Rujukan Ultron (komik)

  1. ↑ Walker, Karen (February 2010). "Ultron: The Black Sheep of the Avengers Family". Back Issue!. TwoMorrows Publishing (38): 23–30.
  2. ↑ http://www.hollywoodreporter.com/heat-vision/age-ultron-creator-roy-thomas-791320 The Hollywood Reporter: "Marvel Legend Reveals What Stan Lee Initially "Hated" About 'Age of Ultron' Breakout