Irnawati, Diah Harun, et al. “The Effect of Giving Shallot Extract (Allium Cepa L) and NPK Fertilizer on the Growth of Green Oil Palm (Brassica Juncea L)”. Jurnal Pijar Mipa, vol. 20, no. 1, Jan. 2025, pp. 179-86, doi:10.29303/jpm.v20i1.6605.