Chia-Chen Wu and  Chih-Fu Wu and  Pey-Weng Lien and  Kai-Chieh Lin,  A Study of Semantic Analysis of LED Illustrated Traffic Directional Arrow in Different Style.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    August 2014, vol. 92(8). 2665 - 2673
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9999154.