Optimalisasi Mutu Pembelajaran Melalui Prinsip Kaizen di MTs Negeri 4 Klaten. Ijelap : Indonesian Journal of Education, Language, and Psychology, [S. l.], v. 3, n. 1, p. 15–24, 2026. Disponível em: https://journal.irsyad.org/index.php/ijelap/article/view/99. Acesso em: 30 may. 2026.