Harwanto, H., E. Hendarto, B. Bahrun, N. Hidayat, D. Istiqomah, and D. P. Candrasari. “Productivity and Nutrient Digestibility of Sorghum Fodder at Different Urine Fertilizers Levels and Harvest Times”. ANIMAL PRODUCTION, Vol. 24, no. 1, Mar. 2022, pp. 23-30, doi:10.20884/1.jap.2022.24.1.94.