1. Basiron, Y. Oil palm industry economic journal, 2(1), 1–10 (2002).
2. Oseghale, S. D., Mohamed, A. F., and Chikere, A. O., Int. J. Sustain. Dev., 10(12), 41–48 (2017)
3. Abdullah, N., and Sulaiman, F., Biomass now-sustainable growth and use, 1(3), 75–93 (2013).
4. Malaysian Palm Oil Council (MPOC), Malaysian Palm Oil Industry, (2013).
5. A review on adsorption mechanism of gold cyanide complex onto activation carbon