Hartono, Arief, Desi Nadalia, and Praja Hary Satria. “Exchangeable Aluminum and Available Phosphorus in the Soils of Bangka Belitung Province: Aluminium Dapat Dipertukarkan Dan Fosfor Tersedia Pada Tanah Di Provinsi Bangka Belitung”. Jurnal Ilmu Tanah dan Lingkungan 24, no. 1 (May 6, 2022): 20-24. Accessed January 30, 2023. https://journal.ipb.ac.id/index.php/jtanah/article/view/40401.