Fresdiana Octavia Sarumaha, and Sutirman Sutirman. “Development of Digital Learning Media Based on I Spring Suite 11 to Improve Students’ Interest and Learning Outcomes in Economics Subjects at SMA Negeri 11 Malinau in the 2024 2025 Academic Year”. International Journal of Education, Language, Literature, Arts, Culture, and Social Humanities 3, no. 1 (January 28, 2025): 101–112. Accessed April 18, 2025. https://pbsi-upr.id/index.php/ijellacush/article/view/1271.