Aprisal A, Abadi AM. Improving students’ mathematical reasoning and self-efficacy through Missouri mathematics project and problem-solving. BetaJTM [Internet]. 2018 Nov. 30 [cited 2026 Apr. 20];11(2):191-208. Available from: http://www.jurnalbeta.ac.id/index.php/betaJTM/article/view/206