Nofriyandi, Nofriyandi, et al. “Problem Based-Learning Performance in Improving Students’ Critical Thinking, Motivation, Self-Efficacy, And Students’ Learning Interest”. Mosharafa: Jurnal Pendidikan Matematika, vol. 13, no. 1, Jan. 2024, pp. 259-72, doi:10.31980/mosharafa.v13i1.1873.