WASET
    B.-Y.-S. Lau and  Y.-C.-T. Jonathan and  M.-S. Alias,  Heritage Tree Expert Assessment and Classification: Malaysian Perspective.   journal   = {International Journal of Biological and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2017, vol. 128(8). 629 - 635
    [viewed 05 May 2024]. Available from: https://publications.waset.org/pdf/10007867.