Maffo Tazoho, Ghislain, Esther Etengeneng Agbor, and Inocent Gouado. “In Vitro, Antioxidant Activities of Aqueous and Methanol Roselle (Hibiscus Sabdariffa) Calyces Extracts from Two Localities in Cameroon”. The North African Journal of Food and Nutrition Research 4, no. 8 (September 23, 2020): 292–297. Accessed June 15, 2024. https://najfnr.com/home/article/view/104.