“Development and Students’ Perception on Teaching Aids of Photoelectric Effect Experiment Using Leds”. Jurnal Pendidikan Fisika 7, no. 3 (Agustus 26, 2019): 253–261. Diakses Agustus 1, 2026. https://journal.unismuh.ac.id/index.php/jpf/article/view/2332.