Hakim, Tharmizi, et al. “The Use of Organic Fertilizer As an Alternative to the Scarcity of Chemical Fertilizers in the Cultivation of Shallots (Allium Ascalonicum L)”. International Conferance Of Digital Sciences And Engineering Technology , vol. 1, no. 1, Oct. 2024, pp. 174-85, https://proceeding.pancabudi.ac.id/index.php/ICDSET/article/view/158.