Hastuti, Febri. “PENGARUH DISIPLIN BELAJAR TERHADAP KESULITAN BELAJAR EKONOMI SISWA KELAS X SEKOLAH BERASRAMA DI KOTA PADANG PANJANG”. Jurnal Educative: Journal of Educational Studies 1, no. 2 (December 2, 2016): 168–177. Accessed January 16, 2026. https://ejournal.uinbukittinggi.ac.id/index.php/educative/article/view/162.