Elvitriana, M. . Nasir, M. . Nizar, V. . Viena, T. . Makmur, and Suhendrayatna, “Utilization of Angsana Leaves (Pterocarpus indicus Willd) as a Natural Coagulant for Palm Oil Mill Effluent (POME) Treatment”, jppipa, pendidikan ipa, fisika, biologi, kimia, vol. 9, no. 12, pp. 12010–12017, Dec. 2023.