- ↑ Apperley, Thomas H. (2006). "Genre and game studies". Simulation & Gaming. 37 (1): 6–23.
- ↑ El-Nasr, M. S., & Yan, S. (2006, June). Visual attention in 3D video games. In Proceedings of the 2006 ACM SIGCHI international conference on Advances in computer entertainment technology (p. 22). ACM.