Zaric, Nadja, Rene Roepke, Vlatko Lukarov, and Ulrik Schroeder. “Gamified Learning Theory: The Moderating Role of learners’ Learning Tendencies”. International Journal of Serious Games 8, no. 3 (September 17, 2021): 71–91. Accessed October 19, 2021. https://journal.seriousgamessociety.org/index.php/IJSG/article/view/438.