Upaya Diversifikasi Ekspor Pertanian di Sumatera Utara: Kasus Pengembangan Ternak Babi. Forum Penelitian Agro Ekonomi, [S. l.], v. 13, n. 1, p. 58–70, 2016. Disponível em: https://epublikasi.pertanian.go.id/berkala/index.php/fae/article/view/1310. Acesso em: 9 may. 2025.