Castillo-Parra, B., B. G. Hidalgo-Cajo, M. Vásconez-Barrera, and J. Oleas-López. “Gamification in Higher Education: A Review of the Literature”. World Journal on Educational Technology: Current Issues, vol. 14, no. 3, May 2022, pp. 797-16, doi:10.18844/wjet.v14i3.7341.