sugiarni, rani 2019. PENERAPAN MEDIA AJAR DIGITAL BERBASIS 4C ( COMMUNICATION, COLLABORATION, CRITICAL THINKING AND PROBLEM SOLVING, DAN CREATIVITY AND INNOVATION) DALAM MENGHADAPI REVOLUSI INDUSTRI 4.0 DI KALANGAN GURU YAYASAN MANDIRI BERSEMI. Qardhul Hasan: Media Pengabdian kepada Masyarakat. 5, 2 (Oct. 2019), 83–89. DOI:https://doi.org/10.30997/qh.v5i2.1926.