Wichiensin, Muanmas, and David Boyce. “Trends of Driving Demand to Inner Bangkok in Situation of a Congestion Charging”. Asia-Pacific Journal of Science and Technology 20, no. 4 (December 18, 2015): 428–448. Accessed April 28, 2024. https://so01.tci-thaijo.org/index.php/APST/article/view/43813.