1. Deterding, S., Khaled, R., Nacke, L.E., Dixon, D.: Gamification: toward a definition. In: CHI 2011 Gamification Workshop Proceedings, Vancouver, BC, Canada, vol. 12 (2011)
2. Hammer, J., Lee, J.: Gamification in education: what, how, why bother. Acad. Exchange Qu. 15(2), 146–151 (2011)
3. Karagiorgas, D.N., Niemann, S.: Gamification and game-based learning. J. Educ. Technol. Syst. 45(4), 499–519 (2017)
4. Al-Azawi, R., Al-Faliti, F., Al-Blushi, M.: Educational gamification vs. game based learning: comparative study. Int. J. Innov. Manage. Technol. 7(4), 132–136 (2016)
5. Kapp, K.M.: The Gamification of Learning and Instruction: Game-based Methods and Strategies for Training and Education. Wiley, Hoboken (2012)