Susantri, A., N. Husna, and B. Buyung. “Students’ Mathematic Problem Solving Ability With Problem Solving Learning Model in Class VII SMP Negeri 2 Singkawang”. Jurnal Gantang, vol. 7, no. 2, Dec. 2022, pp. 163-72, doi:10.31629/jg.v7i2.4963.