Putra, Arif Martien, et al. “Optimal Level of Bacillus Spp. Fermented Soybean Meal Utilization in Broiler Diets under Commercial Conditions: Effect on Gut Morphology and Microbiota”. Indonesian Journal of Agricultural Research, vol. 9, no. 2, July 2026, pp. 63-71, doi:10.32734/injar.v9i2.24736.