S. O. . Sihombing, S. . Sihombing, and A. L. . Siahaan, “The Influence of Student Self-Confidence and Discipline on Learning Achievement in Social Sciences Subjects for Class VIII Student at SMP Negeri 7 Pematangsiantar Academic Year 2023/2024”., JEDA, vol. 3, no. 2, pp. 191–200, May 2024.