Anwar, A., and M. Rajun. “The Effect of Learning Mathematics With Problem Solving Methods on the Ability to Solve Story Problems in Class IX Students of SMP Negeri 6 Batauga”. Jurnal Akademik Pendidikan Matematika, vol. 7, no. 2, Nov. 2021, pp. 152-7, doi:10.55340/japm.v7i2.469.