WASET
    Nükhet Konuk and  N. Gamze Turan and  Yüksel Ardalı,  A Global Perspective on Urban Environmental Problems in Developing Countries: The Case of Turkey.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
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    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10004363.