N. K. Nahumarury, M. Jayadi, and S. Laban, “Status dan Ketersediaan Unsur Hara Mikro Seng (Zn) pada Lahan Sawah Berdasarkan Indeks Pertanaman: Status and Availability of Micronutrient Zinc (Zn) in Rice Fields based on Cropping Index”, JES, vol. 14, no. 2, pp. 140–157, Dec. 2025.