Ramadani, R., M. M. . Lubis, and R. F. . Ilvira. “EFFECT OF LAND AREA, PRODUCTION AND RUBBER PRICES ON THE INCOME OF RUBBER FARMERS IN NORTH SUMATERA”. Agripreneur : Jurnal Pertanian Agribisnis, vol. 13, no. 1, June 2024, pp. 11-15, https://www.iocscience.org/ejournal/index.php/Agripreneur/article/view/4674.