”Heavy Metals Contamination in Water, Soil and Plant Samples of Okomu National Park, Edo State, Nigeria” (2020) African Journal of Biomedical Research, 23(1), s. 29–34. Tillgänglig vid: https://www.ojshostng.com/index.php/ajbr/article/view/859 (åtkomstdatum: 21 maj 2026).