Amalia, L. L. “Meningkatan Kemampuan Pemecahan Masalah Matematis Siswa SMA Melalui Penerapan Model Pembelajaran Problem Based Learning”. INTERMATHZO, vol. 2, no. 1, June 2017, pp. 11-13, https://jurnal.fkip.unla.ac.id/index.php/intermathzo/article/view/267.