MANURUNG, Victor T.; HUTABARAT, Budiman; SUPRIYATI, NFN; SUSILOWATI, Sri Hery. Ketersediaan dan profitabilitas pengusahaan traktor di Jawa Barat, Sumatera Utara dan Lampung. Forum Penelitian Agro Ekonomi, [S. l.], v. 9, n. 2-1, p. 21–29, 2016. Disponível em: https://epublikasi.pertanian.go.id/berkala/fae/article/view/1271. Acesso em: 24 nov. 2024.