How to build serious games. - Henry Kelly; Kay Howell; Eitan Glinert; Loring Holding; Chris Swain; Adam Burrowbridge; Michelle Roper (Commun. ACM, 2007)

Medulla: A Cyberinfrastructure-Enabled Framework for Research, Teaching, and Learning with Virtual Worlds. - Michelle Roper Fox; Henry Kelly; Sachin Patil (Online Worlds: Convergence of the Real and the Virtual, 2010)