Planning in The Development of Multipurpose Cooperatives (KSU) on Coffee Farming Businesses in Mandailing Natal Regency, North Sumatra Province. Jurnal Bisnis Tani, [S. l.], v. 11, n. 2, p. 21–32, 2025. DOI: 10.35308/jbt.v11i2.57. Disponível em: https://journal.utu.ac.id/index.php/jbtani/article/view/57. Acesso em: 10 mar. 2026.