Siregar, Ameilia Zuliyanti, et al. “Management of Pests and Coconut (Cocos Nucifera) Products in Northen Sumatra”. Jurnal Ilmu Pertanian Indonesia, vol. 30, no. 2, Mar. 2025, pp. 305-11, https://doi.org/10.18343/jipi.30.2.305.