Hutapea, H. P., and F. E. Setyowati. “Comparison of The Sterilization Prosess of Calcium Carbonate (CaCO3) As A Raw Material for Animal Probiotics Based on The Total Plate Count”. Science Tech: Jurnal Ilmu Pengetahuan Dan Teknologi, vol. 9, no. 1, Feb. 2023, pp. 73-83, doi:10.30738/st.vol9.no1.a14164.