WASET
    Charawee Butbumrung,  The Cost and Benefit on the Investment in Safety and Health of the Enterprises in Thailand.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2016, vol. 120(12). 4049 - 4052
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10007324.