John Tierney in New York Times (April 8, 2008)
Internet Article 1
Steve Kenson in Green Ronin Pub (2010)
Book 1
Holt, Rinehart, Winston in Plenary Publications International (1975)
Book 3
Judy Willis in ASCD (2010)
Book 13
Shawn Carman, Seth Mason, Rich Wulf in Alderac Entertainment Group (2005-05-01)
Book 1
Marvel in Margaret Weis Productions Limited (2012)
Book 1
Steve Kenson, Jon Leitheusser in Green Ronin Pub (2011)
Book 1
David Epstein in Inside Higher Ed (November 28, 2005)
Journal Article 1
