Ulandari, Uci, Masriani Masriani, Risya Sasri, and Ersando Ersando. “Determination of Tannin Content in Matoa Plants (Pometia Pinnata) Based on Variations in Leaf Age”. Hydrogen: Jurnal Kependidikan Kimia 12, no. 4 (August 30, 2024): 915–928. Accessed September 30, 2025. https://ojspanel.undikma.ac.id/index.php/hydrogen/article/view/12583.