MASRUROH, Durrotul. Peningkatan Kualitas Lembaga Pendidikan Melalui Pendekatan Lean Six Sigma. Muaddib: Jurnal Pendidikan Agama Islam, [S. l.], v. 1, n. 02, p. 23–28, 2023. Disponível em: https://ejournal.insuriponorogo.ac.id/index.php/muaddib/article/view/3579. Acesso em: 1 mar. 2026.