Majied Sumatrani Saragih, Maulana. “The Implementation of Digital Education in Langkat, North Sumatra: Opportunities, Challenges, and Impact on Teaching and Learning Practices”. International Journal of Education and Digital Learning (IJEDL) 2, no. 2 (December 31, 2023): 69–76. Accessed November 12, 2025. https://ij.lafadzpublishing.com/index.php/IJEDL/article/view/268.