Ndayishimiye, Eric, Jean de Dieu Amini Ngabonziza, and Spéciose Ndimurugero Ngirabakunzi. “The Effect of Gamification on Learners’ English-Speaking Skills Performance: A Case of Five Selected High Schools in Kicukiro District, Rwanda”. African Journal of Empirical Research 5, no. 3 (August 24, 2024): 797–812. Accessed October 5, 2025. https://ajernet.net/ojs/index.php/ajernet/article/view/531.