GULTOM, F.; HERNAWATY, H.; SELAMAT KARO-KARO. ANALISIS TINGKAT OPTIMASI PRODUKSI USAHATANI KENTANG (Solanumtuberosum L.) DI KABUPATEN SAMOSIR. Jurnal Ilmiah METADATA, [S. l.], v. 3, n. 3, p. 1301-1325, 2021. Disponível em: https://www.ejournal.steitholabulilmi.ac.id/Backup%20/index.php/metadata/article/view/291. Acesso em: 31 oct. 2026.