Perry, Gabriela Trindade, Ci Costa Kulpa, Eluza Pinheiro, and Marcelo Leandro Eichler. 2012. “Lessons from an Educational Game Usability Evaluation”. International Journal of Interactive Mobile Technologies (iJIM) 6 (2):pp. 23-28. https://doi.org/10.3991/ijim.v6i2.1888.