D. P. Sunaryanti, I. P. D. Rahmadhani, S. Fibriani, and T. A. N. Putri, “Regional Disparities in Shallot Production: A Comparative Study of Five Districts in Nganjuk Regency”, FAFELA: Fut. Agro-Food Econ. Logist. Anal. J., vol. 2, no. 1, pp. 40–45, Dec. 2025.