Ridzuan Kamarudin, M., S. Marlizan, N. Md Anis, and A. Feisal Merican. “Isolation and Characterization of Hydrocarbon-Utilizing Bacteria from Soils Contaminated With Used Engine Oil and Diesel Oil”. Malaysian Journal of Science, vol. 20, no. 1, Apr. 2001, pp. 35-39, https://ejournal.um.edu.my/index.php/MJS/article/view/8773.