Sossriati, M. and Ristontowi, R. (2020) “Kemampuan Pemecahan Masalah Matematis Melalui Model Problem Based Instruction (PBI) di SMA”, Jurnal Pendidikan Matematika Raflesia, 5(2), pp. 122–129. doi: 10.33369/jpmr.v5i2.11417.