„Heavy Metals Contamination in Water, Soil and Plant Samples of Okomu National Park, Edo State, Nigeria“, AJBR, sv. 23, izd. 1, str. 29–34, sij. 2020, Pristupljeno: 25. travanj 2026. [Na internetu]. Dostupno na: https://ojshostng.com/index.php/ajbr/article/view/859