Zulfisa Zulfisa, and Rini Lestari. “Penetapan Kadar Kalsium Pada Daun Krokot (Portulaca Oleracea L.) Secara Kompleksometri”. Journal Pharma Saintika 6, no. 1 (October 10, 2022): 01–07. Accessed February 7, 2026. https://www.journal.stisadwifarma.ac.id/index.php/jps/article/view/15.