Kusmiyati, K., F. W. F. Waangsir, E. M. Mauguru, and M. K. Tokan. “Bacteriological Quality and Environment Risk of Water Pollution of Dug Wells on Semau Island, Indonesia”. International Journal of Health Sciences, vol. 6, no. S9, Aug. 2022, pp. 732-46, doi:10.53730/ijhs.v6nS9.12324.