Minarti, I. B. ., Mulyaningrum, E. R. . and Utami, A. R. S. . (2023) “Analysis of the variety of learning difficulties of grade IX students in the online learning system on the material of the human reproductive system at SMP PGRI 9 Pemalang”, Cendikia : Media Jurnal Ilmiah Pendidikan, 13(5), pp. 703-708. doi: 10.35335/cendikia.v13i5.3783.