Hastuti R. Studi Awal Pengembangan Alat Ukur Kedisiplinan Siswa di Sekolah Menengah. j.psiko [Internet]. 2018 Jan. 31 [cited 2024 May 5];5(1). Available from: https://academicjournal.yarsi.ac.id/index.php/Jurnal-Online-Psikogenesis/article/view/496