Gurama, Haruna H. “Isolation of Bacteria from Spent Engine Oil Polluted Site in Bali and Its Environs Taraba State, Nigeria”. American Journal of Innovation in Science and Engineering 2, no. 3 (August 28, 2023): 11–14. Accessed September 23, 2025. https://www.e-palli.org/index.php/ajise/article/view/1927.