WASET
    A.R. Ismail and  M. R. A. Rani and  Z. K. M. Makhbul and  M. J. M. Nor and  M. N. A. Rahman,  A Study of Relationship between WBGT and Relative Humidity to Worker Performance.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2009, vol. 27(3). 257 - 262
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/1810.