WASET
    May A. Massoud,  Water, Sanitation and Health in Developing Countries: How Far from Sustainable Development?.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2011, vol. 59(11). 1375 - 1378
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/11657.