Hartono, Arief, et al. “Characterization of Nitrate Release on Andisols in West and Central Java: Karakterisasi Pelepasan Nitrat Pada Andisol Di Jawa Barat Dan Jawa Tengah”. Jurnal Ilmu Tanah Dan Lingkungan, vol. 21, no. 1, Apr. 2019, pp. 16-20, https://doi.org/10.29244/jitl.21.1.16-20.