Wicaksana, D., S. Hidanah, W. P. Lokapirnasari, M. A. Al-Arif, M. Lamid, and K. Suprianondo. “Administration of Palm Kernel Meal and ß-Mannanase on Laying Hens Productivity”. Jurnal Medik Veteriner, vol. 4, no. 1, Apr. 2021, pp. 72-77, doi:10.20473/jmv.vol4.iss1.2021.72-77.