WASET
    Hyein Ko,  Populism and the Democratic Crisis: Comparative Study of Four Countries.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2018, vol. 133(1). 160 - 164
    [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/10008510.