Atikpo, E., and N. I. Ihimekpen. “Evaluating the Potential of Microorganisms in Bioremediation of Lead Polluted Soil”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT, Vol. 16, no. 2, June 2020, pp. 387-94, https://www.azojete.com.ng/index.php/azojete/article/view/225.