W. T. Hsu and  H. L. Tsai,  Case Study of the Exercise Habits and Aging Anxiety of Taiwanese Insurance Agents.   journal   = {International Journal of Sport and Health Sciences}, [online]. World Academy of Science, Engineering and Technology.
    February 2017, vol. 131(11). 655 - 658
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10008736.