Himawanto, Wasis, Ardi Sanjaya, and Bambang Wijanarko. 2023. “Design and Build a Timekeeping Device on RFID-Based Fast Roller Skating Sports”. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran 8 (3), 186-206. https://doi.org/10.29407/js_unpgri.v8i3.20061.