Minarti, Ipah Budi, Eko Retno Mulyaningrum, and Amalia Rizki Septi Utami. 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):703-8. https://doi.org/10.35335/cendikia.v13i5.3783.