Atani O, Lapono L, Louk A. RANCANG BANGUN ALAT PERAGA PRAKTIKUM GERAK JATUH BEBAS. fisa [Internet]. 4Aug.2019 [cited 1May2024];4(1):33-9. Available from: https://ejurnal.undana.ac.id/index.php/FISA/article/view/1435