Simatupang, Pantjar, et al. “Sistem Gaduhan Sapi Tradisional Bali: Faktor Pendorong, Penopang Dan Karakteristiknya”. Forum Penelitian Agro Ekonomi, vol. 12, no. 2, Sept. 2016, pp. 50-55, https://epublikasi.pertanian.go.id/berkala/fae/article/view/1293.