„Heavy Metals Contamination in Water, Soil and Plant Samples of Okomu National Park, Edo State, Nigeria“ (2020) African Journal of Biomedical Research, 23(1), str. 29–34. Dostopno na: https://ojshostng.com/index.php/ajbr/article/view/859 (Pridobljeno: 6 junij 2026).