„Heavy Metals Contamination in Water, Soil and Plant Samples of Okomu National Park, Edo State, Nigeria“, AJBR, let. 23, št. 1, str. 29–34, jan. 2020, Pridobljeno: 6. junij 2026. [Na spletu]. Dostopno na: https://ojshostng.com/index.php/ajbr/article/view/859