‘Investigation of Antioxidant Compositions and Antioxidative Activities of Ethanol Extract of Alstonia Boonei Stem Bark’. Nigerian Journal of Pharmaceutical Research 16, no. 1 (september 30, 2020): 71–80. Geraadpleegd juni 25, 2026. https://ojshostng.com/index.php/njpharmaceuticalsciences/article/view/895.