Farib, Purnama Mulia, M. Ikhsan, and Muhammad Subianto. “Proses Berpikir Kritis Matematis Siswa Sekolah Menengah Pertama Melalui Discovery Learning”. Jurnal Riset Pendidikan Matematika 6, no. 1 (May 29, 2019): 99–117. Accessed May 9, 2025. https://journal.uny.ac.id/index.php/jrpm/article/view/21396.