Supriyadi, Supriyadi, et al. “Quality Index and Land Suitability for Cocoa Plants in Bandar District, Pacitan Regency, East Java”. Jurnal Ilmu Pertanian Indonesia, vol. 31, no. 1, Oct. 2025, pp. 23-32, https://doi.org/10.18343/jipi.31.1.23.