Jason Bulmahn, James Jacobs, Steve Kenson in Paizo Pub Llc (2010)
Book 1
Bill Coffin, Kevin Siembieda in Palladium Books (2006)
Book 1
Catalyst Game Labs in Catalyst Game Labs (2013-09-25)
Book 1
Jane McGonigal in Ted Talks (July 2012)
Conference Session 1
Stephen Hawking, Lawrence Krauss in Basic Books (AZ) (2007-07-10)
Book 15
Kevin Hartnett in Quanta Magazine (March 5, 2019)
Internet Article 1
