Sembiring, D., E. Hawayanti, D. T. Astuti, M. Lusia, R. . Karneta, Y. Purwanti, and N. S. Sebayang. “Analysis of the Combination of Planting Distance and Dosage of Environmentally Friendly Liquid Organic Fertilizer on Shallot Growth”. Jurnal Penelitian Pertanian Terapan, vol. 24, no. 4, Dec. 2024, pp. 576-85, doi:10.25181/jppt.v24i4.3790.