@inproceedings{DiGRA-2007-Nojima,
	author        = "Miho Nojima",
	booktitle     = "{Proceedings of the Fourth DiGRA International Conference: Situated Play}",
	ee            = "http://www.digra.org/digital-library/publications/pricing-models-and-motivations-for-mmo-play/",
	publisher     = "{Digital Games Research Association}",
	title         = "{Pricing models and Motivations for MMO play}",
	year          = 2007,
}