Wulandari, Muhairina Sri, and Wildan Hakim. “Pemahaman Konsep Matematis Siswa Kelas IX Pada Materi Bangun Ruang Sisi Datar”. Empiricism Journal, vol. 7, no. 3, Aug. 2026, pp. 2708-24, https://doi.org/10.36312/ej.v7i3.6205.