Djayasinga, R.; Situmeang, R. T. M.; Unob, F.; Hadi, S.; Manurung, P.; Sumardi, S. Chicken Eggshell Powder As Antibacterial Against Staphylococcus Aureus and Escherichia Coli Through In Vitro Studies. J. Multidiscip. Appl. Nat. Sci. 2024, 4, 194-209.