Samuel Olajide Babawale and  O. O. Ogunkoya ,  Variations in Water Supply and Quality in Selected Groundwater Sources in a Part of Southwest Nigeria.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2018, vol. 144(12). 767 - 770
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10009890.