O, Dinda Dwi, Bidura, I G. N. G., AND Candrawati, D. P. M. A.. " The Effect of Probiotic Cellulolytic B-6 Bacteria in Drinking Water On Weight and Physical Quality of Egg In Lohmann Brown Laying Hens Aged 40-48 Weeks" Jurnal Peternakan Tropika [Online], Volume 6 Number 3 (13 September 2018)