Manik, Efron, Marco Van Basten Siagian, Jernita Hutapea, Agnes Parhusip, Putri Batubara, Gita Sitanggang, and Rubeka Ulfani. “Bimbingan Belajar Gratis Semua Mata Pelajaran Di SMP Swasta HKBP Sidorame”. Jurnal Abdimas Mutiara 3, no. 2 (August 5, 2022): 64–70. Accessed January 30, 2026. https://e-journal.sari-mutiara.ac.id/index.php/JAM/article/view/3087.