Hartono, Arief, Syaiful Anwar, and Masruroh. “Characteristics of Nitrate Sorption of Andisols: Karakteristik Erapan Nitrat Pada Andisol”. Jurnal Ilmu Tanah dan Lingkungan 23, no. 1 (April 1, 2021): 1-6. Accessed November 29, 2021. https://ilkom.journal.ipb.ac.id/index.php/jtanah/article/view/32413.