1. Adkins, S. (2011). The Worldwide Market for Mobile Learning Products and Services. 2012–2015 Forecast and Analysis. Ambient Insight Comprehensive Report. USA: Monroe.
2. Akkerman, S. Admiraal, W. & Huizenga, J. (2009). Storification in History education: A mobile game in and about medieval Amsterdam. Computers & Education 52 (2), 449–459.
3. Ally, M. (Hrsg.) (2009). Mobile learning – Transforming the delivery of education and training (Vol. 7). Edmonton, AB: AU Press.
4. Björk, S. & Holopainen, J. (2004). Patterns in Game Design. Boston, MA: Charles River Media.
5. Börner, D., Glahn, C., Stoyanov, S., Kalz, M., & Specht, M. (2010). Expert concept mapping study on mobile learning. Campus-Wide Information Systems 27 (4), 240–253.