Lisnawati, Lisnawati. 2020. “The Use of Student-Centered Advocacy Learning Approaches in Improving Student Learning Achievement in Social Studies Subjects Class VIII at MTS. Nurussalam Tetebatu Sikur Sub-District TA. 2019/2020”. Jurnal Al-Muta`aliyah : Jurnal Pendidikan Guru Madrasah Ibtidaiyah 5 (1), 91 - 104. https://ejournal.kopertais4.or.id/sasambo/index.php/mutaaliyah/article/view/3763.