Labotano, Sahri, Teguh Sukriawan, Sitti Aminah, Dewi S. Ahmar, Tri Santoso, and Magfirah Magfirah. “Utilization of Purple Trumpet Flower Extract (Ruellia Tuberosa L.) As an Alternative Acid-Base Titration Indicator”. Jurnal Akademika Kimia 15, no. 2 (May 29, 2026): 150–158. Accessed October 8, 2026. https://jurnalfkipuntad.com/index.php/jak/article/view/5983.