Somtop Keawchuer,  Factors Affecting Happiness Learning of Students of Faculty of Management Science, Suan Sunandha Rajabhat University.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2014, vol. 90(6). 1790 - 1794
    [viewed 09 May 2024]. Available from: https://publications.waset.org/pdf/9998565.