Ali, S., La Nafie, N., & Taba, P. (2019). BIOSORPTION OF Cu (II) METAL IONS BY DRAGON FRUIT SKIN (Hylocereus polyrhizus). Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta), 11(1), 21-31. https://doi.org/10.20956/ica.v11i1.6401