WASET
    F. S. Eguakun and  T. C. Nkwor ,  Evaluation of Hazardous Status of Avenue Trees in University of Port Harcourt.   journal   = {International Journal of Urban and Civil Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2019, vol. 151(7). 373 - 378
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10010560.