Sori, Umri Sofyan, Nurdin Ibrahim, and Rudi Hartono. “Development of a Class XI Citizenship Education Learning Model Based on Blended Learning Flipped Classroom at Tunas Bangsa Vocational School, Depok”. IJOEM Indonesian Journal of E-learning and Multimedia 3, no. 2 (May 23, 2024): 45–50. Accessed July 17, 2025. https://ejournal.1001tutorial.com/index.php/ijoem/article/view/255.