Arni, Arni, Dini Hadiarti, and Tuti Kurniati. “Development of E-Module Based on Premna Serratifolia Research to Identify Functional Group of Secondary Metabolites”. Jurnal Pendidikan Kimia 16, no. 2 (August 19, 2024): 119–126. Accessed July 3, 2025. https://jurnal.unimed.ac.id/2012/index.php/jpk/article/view/59061.