sirwanS., AhyaniR., and SartikaS. “DEVELOPMENT OF VIRTUAL LEARNING SYSTEM (VLS) BASED ON MOODLE AS A PLATFORM ONLINE LEARNING IN THE COVIC-19”. Akademika : Jurnal Teknologi Pendidikan, Vol. 10, no. 02, Dec. 2021, pp. 447-63, doi:10.34005/akademika.v10i02.1579.