T. Adma and M. N. S. Rangkuti, “Total Plate Count (TPC) Test and Contamination of Coliform Escherichia coli and Salmonella sp. Bacteria in Cucumulawak Jamu in Traditional Markets in Medan City”, Biocaster j. kaji. bosbiol., vol. 6, no. 1, pp. 336–344, Jan. 2026.