Hutagalung, S. V., R. . Khairuna Damanik, and P. . Rattaprasert. “Parasite Contamination of Water Source at Pangkalan Masyhur Sub-District, Medan Johor District”. Sumatera Medical Journal, vol. 7, no. 3, Sept. 2024, pp. 116-20, doi:10.32734/sumej.v7i3.11826.