Emmanuela Neoma Akaniro-Ejim, and Godwill Azeh Engwa. “Polyphenol Content and in Vitro Antioxidant Activity of Aqueous-Ethanol Extracts of Pterocarpus Soyauxii and Pterocarpus Santalinoides”. Global Journal of Medical Research 18, no. B2 (March 15, 2018): 1–8. Accessed May 7, 2024. https://medicalresearchjournal.org/index.php/GJMR/article/view/1497.