Haryono, Atiek Rostika Noviyanti, Hersandy Dayu Kusuma, and Irwan Kurnia, “Characteristics of Pumice from Cicurug and Its Application as a Bleacher for Crude Palm Oil”, ETHOS : Jurnal Penelitian dan Pengabdian kepada Masyarakat, vol. 12, no. 2, pp. 91–100, Jun. 2024.