Ritonga, B., Yektiningtyas, W., Budiarti, I. S., & Kusdianto, K. (2026). Implementasi Problem Based Learning Berbasis Etnosains Pada Materi Pembiasan Cahaya di SD YPK Betfage Kabare. Indonesian Journal of Multidisciplinary on Social and Technology, 4(2), 2214–2220. https://doi.org/10.69693/ijmst.v4i2.10319