«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, fasc. 2, pp. 187–194, mag. 2019, Consultato: 5 aprile 2026. [Online]. Disponibile su: https://ojshostng.com/index.php/ajbr/article/view/2260