Putri Milanda Bainamus, et al. “The Effectiveness of the Utilization of Epic Pen in Mathematics Education Course 2”. Jurnal Visionary : Penelitian Dan Pengembangan Dibidang Administrasi Pendidikan, vol. 13, no. 2, Oct. 2025, pp. 216-24, doi:10.33394/vis.v13i2.16381.