Maulana, Zulkifli, et al. “Break-Even Point Analysis of Liquid Inorganic Fertilizer Business: A Case Study of Gapoktan Bubun Rondon, Alla District, Enrekang Regency”. Journal of Environmental and Agricultural Studies, vol. 4, no. 3, Dec. 2023, pp. 58-67, https://doi.org/10.32996/jeas.2023.4.3.9.