‘Metal Contents and Acute Toxicity of Combined Vernonia amygdalina Leaves and Garcinia kola Seeds-VAGK, a Herbal and Nutritional Formulation in Male Wistar Rats’, AJBR, vol. 22, nr. 2, pp. 187–194, mei 2019, Geraadpleegd: 17 mei 2026. [Online]. Beschikbaar op: https://ojshostng.com/index.php/ajbr/article/view/2260