Utama, C. S., B. Sulistiyanto, and A. Mustofa. “The Effect of Altitude on Broiler’s Litter Microbical Quality That Cultivated at Closed House”. JURNAL ILMIAH PETERNAKAN TERPADU, vol. 9, no. 2, July 2021, pp. 139-51, doi:10.23960/jipt.v9i2.p139-151.