WISNANINGSIH, W.; PRADANA, M. B.; FATAH, K. M. Pengedalian Mutu Batubara Dengan Teknik Distribusi Normal. MECHANICAL, [S. l.], v. 14, n. 2, p. 186, 2023. DOI: 10.23960/mech.v14i2.3664. Disponível em: https://journal.eng.unila.ac.id/index.php/mech/article/view/186. Acesso em: 30 sep. 2025.