Sitorus, Friska Ria, Pestaria Naibaho, and Wolter Parlindungan Silalahi. “Experience, Challenges, and Engagement Amidst Pandemic: The Online Learning to Onsite Learning”. Jurnal Penelitian Ilmu Pendidikan 16, no. 1 (March 21, 2023): 13–21. Accessed May 15, 2025. https://jurnal.uny.ac.id/index.php/jpip/article/view/52298.