« Polycyclic Aromatic Hydrocarbon (PAHs) Levels in Treated Spent Engine Oil Contaminated Soil from Automechanic Workshop Site in Wukari, Nigeria ». Lafia Journal of Scientific and Industrial Research 2, no. 1 (avril 23, 2024): 70–77. Consulté le mai 17, 2026. https://lafiascijournals.org.ng/index.php/ljsir/article/view/308.