Witdiyanto, Rakhmat, Yayi Febdia Pradani, and Marsono Marsono. 2026. “Development of the RAKHMATTRIX Gamification Platform Based on the Mystery Object Challenge”. Jurnal Teknologi Informasi Dan Pendidikan 19 (2):1684-94. https://doi.org/10.24036/jtip.v19i2.1146.