Suteky, T., Dwatmadji, D., & Soetrisno, E. (2023). The Potential Used of Humic Substance As Natural Organic Additives For Ruminants: A Review. Jurnal Sain Peternakan Indonesia, 18(1), 64–70. https://doi.org/10.31186/jspi.id.18.1.64-70