Hasanah, F. et al. 2022. Implementation of the ruler drop test online to measure the reaction speed. Jurnal Maenpo : Jurnal Pendidikan Jasmani Kesehatan dan Rekreasi. 12, 2 (Dec. 2022), 165–177. DOI:https://doi.org/10.35194/jm.v12i2.2399.