Itodo, A., Sha’Ato, R., & Arowojolu, M. (2018). Polycyclic aromatic hydrocarbons in water samples from a Nigerian bitumen seepage: Gas chromatography- mass spectrometry quantification. Bangladesh Journal of Scientific and Industrial Research, 53(4), 319–326. https://doi.org/10.3329/bjsir.v53i4.39197