Lisnawati, E., Widyatiningtyas, R., & Ridha, M. R. (2018). Penerapan Model Pembelajaran Problem Based Learning (PBL) Terhadap Kemampuan Berpikir Reflektif Matematis Siswa SMA Kelas XI . INTERMATHZO, 3(2), 97–105. Retrieved from https://jurnal.fkip.unla.ac.id/index.php/intermathzo/article/view/285