Purwanto, Arie. “Webinar Pemodelan Regresi Multilevel Dalam Kajian Hasil Belajar Matematika Terhadap Masalah Yang Dihadapi Santri Muhammadiyah Boarding School Pleret Bantul ”. Surya Abdimas 6, no. 3 (July 29, 2022): 481-488. Accessed November 21, 2024. https://jurnal.umpwr.ac.id/index.php/abdimas/article/view/1694.