Wisnubroto, M. P., Rezki, D., and Hasibuan, H. S. “Physiological and biochemical responses of sugar palm (Arenga pinnata Merr.) at different elevation levels”. International Journal of Agricultural Technology, vol. 22, no. 2, Mar. 2026, pp. 999-1016, doi:10.63369/ijat.2026.22.2.999-1016.