Budhi Primasari and  Shaliza Ibrahim and  M Suffian M Annuar and  Lim Xung Ian Remmie,  Aerobic Treatment of Oily Wastewater: Effect of Aeration and Sludge Concentration to Pollutant Reduction and PHB Accumulation.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2011, vol. 54(6). 380 - 384
    [viewed 21 October 2019]. Available from: https://publications.waset.org/pdf/3177.