Fathoni, A., and K. Muhtadin. “Implementation of Problem Based Learning (PBL) Model to Improve SMP Students’ Concepts Mastery in Additive Materials and Its Correlation With Surat Al Baqarah Verse 168”. Pengabdian: Jurnal Abdimas, vol. 2, no. 1, Mar. 2024, pp. 61-70, doi:10.55849/abdimas.v2i1.741.