“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), pp. 201–207. doi:10.29244/jintp.21.3.201-207.