Mohd Sahi, N. H., and K. Ariffin. “Rubber Commodity in Federated Malay States (FMS), 1900-1941: Komoditi Getah Di Negeri-Negeri Melayu Bersekutu (NNMB), 1900-1941”. Perspektif Jurnal Sains Sosial Dan Kemanusiaan, vol. 12, no. 2, Oct. 2020, pp. 1-10, doi:10.37134/perspektif.vol12.2.1.2020.