Nagara, R. L. K., et al. “Massa Protein Dan Kalsium Daging Ayam Broiler Akibat Penambahan Sinbiotik Dalam Ransum”. Jurnal Peternakan Indonesia (Indonesian Journal of Animal Science), vol. 21, no. 3, Oct. 2019, pp. 198-04, doi:10.25077/jpi.21.3.198-204.2019.