WASET
    Hei-Chia Wang and  Che-Tsung Yang,  Research Topic Map Construction.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    February 2013, vol. 74(2). 326 - 328
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/12950.