Shilatul Najwa Binti Sharuddin, S. et al. 2019. Comparative tolerance and survival of scirpus grossus and lepironia articulata in real crude oil sludge. International Journal of Engineering & Technology. 8, 1 (Jan. 2019), 24–28. DOI:https://doi.org/10.14419/ijet.v8i1.12337.