AROFAH, Laelatul. Validity and Reliability of Self-discipline Scale for Junior High School Students. Nusantara of Research : Jurnal Hasil-hasil Penelitian Universitas Nusantara PGRI Kediri, Indonesia, INA, v. 8, n. 1, p. 25–34, 2021. DOI: 10.29407/nor.v8i1.15873. Disponível em: https://ojs.unpkediri.ac.id/index.php/efektor/article/view/15873. Acesso em: 3 apr. 2025.