“Validation of High-Performance Liquid Chromatography (HPLC) Method for Quantification of Ethyl P-Methoxycinnamate in Kaempferia Galanga Extract: Http: www.doi.org 10.26538 Tjnpr V7i8.39”. Tropical Journal of Natural Product Research 7, no. 8 (August 31, 2023): 3829–3835. Accessed February 8, 2026. https://tjnpr.org/index.php/home/article/view/2459.