Harianto Andi Ma’tu, Sahrul Saehana, & supriyatman. (2025). Student’ Conceptual Difficulties about Electron Transitions in Bohr and Quantum Models. Jurnal Universitas Tadulako, 9(1), 1-7. https://doi.org/10.22487/j25490192.2025.v9.i1.pp1-7