Dinny Cahyantika, et al. “Weeds Vegetation in Rubber Plantations at Different Altitudes in Indragiri Hulu District, Riau Province, Indonesia”. Jurnal Riset Perkebunan, vol. 6, no. 1, Mar. 2025, pp. 45-55, doi:10.25077/jrp.6.1.45-55.2025.