Josafat Alexander, Irving, Mariana Surbakti, Gloria Sirait, and Ramlan Silaban. “Antimicrobial Activity Test of Alkaloid Rich Extract from Morinda Citrifolia Leaves Against the Growth of Pathogenic Bacteria Staphylococcus Aureus and Escherichia Coli”. EduMatSains : Jurnal Pendidikan, Matematika dan Sains 10, no. 4 (April 30, 2026): 222–234. Accessed June 20, 2026. https://ejournal.uki.ac.id/index.php/edumatsains/article/view/8043.