RAMADANI, R.; LUBIS, M. M. .; ILVIRA, R. F. . EFFECT OF LAND AREA, PRODUCTION AND RUBBER PRICES ON THE INCOME OF RUBBER FARMERS IN NORTH SUMATERA. Agripreneur : Jurnal Pertanian Agribisnis, [S. l.], v. 13, n. 1, p. 11-15, 2024. Disponível em: https://www.iocscience.org/ejournal/index.php/Agripreneur/article/view/4674. Acesso em: 13 may. 2026.