Suryana, Achmad, and Ketut Kariyasa. “Efisiensi Usaha Tani Padi Melalui Pengembangan SUTPA”. Forum Penelitian Agro Ekonomi, vol. 15, no. 1-2, Sept. 2016, pp. 67-81, https://epublikasi.pertanian.go.id/berkala/fae/article/view/1318.