“Cadmium Pollution in Soil of Rice Fields Around Lapindo Mud Using The Geoaccumulation Index (I-Geo)”. G-Tech: Jurnal Teknologi Terapan 9, no. 3 (July 31, 2025): 1746–1751. Accessed October 8, 2026. https://ejournal.uniramalang.ac.id/g-tech/article/view/7617.