THOHIR, Muhammad Bakhru. Penerapan Green Chemistry Nomor 7 untuk Penurunan Kesadahan Air. Hydrogen: Jurnal Kependidikan Kimia, [S. l.], v. 11, n. 6, p. 874–888, 2023. DOI: 10.33394/hjkk.v11i6.9871. Disponível em: https://e-journal3.undikma.ac.id/index.php/hydrogen/article/view/9871. Acesso em: 18 aug. 2025.