WASET
    Fiona Curran-Cournane,  Soil Quality State and Trends in New Zealand’s Largest City after 15 Years.   journal   = {International Journal of Biological and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2015, vol. 100(4). 325 - 332
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10001081.