(1)
Mohd Sahi, N. H.; Ariffin, K. Rubber Commodity in Federated Malay States (FMS), 1900-1941: Komoditi Getah Di Negeri-Negeri Melayu Bersekutu (NNMB), 1900-1941. PERS 2020, 12, 1-10.