“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”. 2022. Tropical Journal of Natural Product Research 6 (8): 1210-14. https://www.tjnpr.org/index.php/home/article/view/1289.