Koibur, A. E., D. Iyai, and J. A. Palulungan. “Characteristics of Pigs Farming System in The Bruyadori District Biak Numfor Regency”. Bantara Journal of Animal Science, vol. 1, no. 2, Oct. 2019, pp. 74-81, doi:10.32585/bjas.v1i2.397.