“Development and Validation of HPLC Method for Determination of Quercetin in Hydrogel Transdermal Patches Loaded With Red Onion Peel Extract: doi.org 10.26538 Tjnpr V6i8.8”. Tropical Journal of Natural Product Research 6, no. 8 (August 1, 2022): 1210–1214. Accessed January 2, 2026. https://www.tjnpr.org/index.php/home/article/view/1289.