Sukarman, Sukarman, et al. “Tin Mining Process and Its Effects on Soils in Bangka Belitung Islands Province, Indonesia”. SAINS TANAH - Journal of Soil Science and Agroclimatology, vol. 17, no. 2, Dec. 2020, pp. 180-9, https://doi.org/10.20961/stjssa.v17i2.37606.