G.F, Frideni, G. A Wisma, M.Z. Mubarok, and S. Purwadaria. “ADSORPSI NIKEL DAN KOBALT PADA RESIN PENUKAR ION LEWATIT MONOPLUS TP 207 XL DALAM BEBERAPA LARUTAN SULFAT”. Jurnal Metalurgi 26, no. 1 (April 4, 2011): 45–52. Accessed March 17, 2026. https://ejournal.brin.go.id/metalurgi/article/view/6593.