Hasanah, M., A. Wijaya, F. S. Arsyad, R. Mohadi, and A. Lesbani. “Preparation of C-Based Magnetic Materials from Fruit Peel and Hydrochar Using Snake Fruit (Salacca Zalacca) Peel As Adsorbents for the Removal of Malachite Green Dye: 10.32526/Ennrj/21/202200192”. Environment and Natural Resources Journal, vol. 21, no. 1, Jan. 2023, pp. 67-77, https://ph02.tci-thaijo.org/index.php/ennrj/article/view/247763.