Siagian, Hana Daforosa R, Makmur Sirait, and Rita Juliani. “PENGEMBANGAN ALAT PERAGA INDEKS BIAS DI SMA”. Jurnal Pendidikan Fisika 11, no. 1 (June 29, 2022): 6–10. Accessed July 5, 2025. https://jurnal.unimed.ac.id/2012/index.php/jpf/article/view/30346.