ma'rifah, u., & ardiyansah, t. (2022). STUDENTS’ PERSPECTIVE ON “SPADA UMG” ONLINE LEARNING PLATFORM AT UNIVERSITY OF MUHAMMADIYAH GRESIK. DIDAKTIKA : Jurnal Pemikiran Pendidikan, 28(1), 89-94. doi:10.30587/didaktika.v28i2.3559