Shirazi, Ovais Ullah, Muhammad Muzaffar Ali Khan Khattak, and Nor Azwani Mohd Shukri. “Chromatographic Evaluation of Gallic Acid, Catechin and Quercetin in Methanolic Extracts of Selected Formulations of Spices and Herbs”. Progress in Nutrition 21, no. 2-S (January 23, 2020): 236–251. Accessed May 11, 2021. https://mattioli1885journals.com/index.php/progressinnutrition/article/view/5417.