Hariyanti, Sinta Devi, Susi Rahayu, Siti Alaa’, and Dian Wijaya Kurniawidi. “Lombok Pumice for Adsorption of Fe2+ Metal Ions Using Activation Temperature Variations”. Jurnal Biologi Tropis 23, no. 3 (July 27, 2023): 572–577. Accessed May 21, 2024. http://jurnalfkip.unram.ac.id/index.php/JBT/article/view/5306.