Marhaeni, Nafida Hetty, et al. “Feasibility of Opportunity Material Module With Joymath Cognitive Behavioral Method to Reduce Mathematics Anxiety and Increase Student Self-Efficacy”. Mosharafa: Jurnal Pendidikan Matematika, vol. 13, no. 3, July 2024, pp. 817-28, doi:10.31980/mosharafa.v13i3.2188.