Aris, Abdul, dkk. “Tingkat Kedisiplinan Siswa Kelas IX SMP Negeri 6 Semarang”. Jurnal Penelitian Multidisiplin Ilmu, vol. 3, no. 1, Juni 2024, hlm. 2423-30, https://melatijournal.com/index.php/Metta/article/view/540.