Hidayat, Muhammad Sepul, and Sulfi Purnamasari. “The Influence of Independent Learning and Self- Efficacy on Learning Achievement of Economics Subjects in High School”. International Journal of Economics Education Research (IJEER) 2, no. 2 (July 8, 2022). Accessed March 13, 2025. https://openjournal.unpam.ac.id/index.php/IJEER/article/view/22162.