Maduwuba, M. C. ., G. C. . Okpokwasili, and A. A. . Ibiene. “Bacteriological and Heavy Metal Assessment of a Tropical Crude Oil- Polluted Soil, Water and Sediment”. GSC Biological and Pharmaceutical Sciences, vol. 16, no. 2, Aug. 2021, pp. 159-65, doi:10.30574/gscbps.2021.16.2.0237.