Hastuti, Rahmah. “Studi Awal Pengembangan Alat Ukur Kedisiplinan Siswa Di Sekolah Menengah”. Jurnal Psikogenesis 5, no. 1 (January 31, 2018). Accessed May 5, 2024. https://academicjournal.yarsi.ac.id/index.php/Jurnal-Online-Psikogenesis/article/view/496.