Satriyo, Rachmadanny Ramadhan, and Yeni Anistyasari. “STUDI LITERATUR PROSES PEMBELAJARAN VIRTUAL LEARNING BERBASIS GAMIFIKASI DI ERA REVOLUSI INDUSTRI 4.0”. IT-Edu : Jurnal Information Technology and Education, vol. 5, no. 2, Aug. 2020, pp. 195-16, doi:10.26740/it-edu.v5i2.37413.