Dibie N. Edward and Ukhun E. Mark. “Quantification and Storage Studies With Total Phenols Content and Percentage Antioxidant Activities of Piper Guineense Leaves”. NIPES - Journal of Science and Technology Research 4, no. 3 (November 11, 2022). Accessed September 20, 2024. https://journals.nipes.org/index.php/njstr/article/view/391.