“Suplementasi Bacillus Subtilis Terhadap Produktivitas Ayam Petelur Skala Komersial: Supplementation of Bacillus Subtilis to Productivity of Laying Hens on a Commercial Scale”. 2023. Jurnal Ilmu Nutrisi Dan Teknologi Pakan 21 (3): 201-7. https://doi.org/10.29244/jintp.21.3.201-207.