Stierdahl, Jens, and Henning Schroll. “Comparison of Environmental Impact Assessment of Highways in Malaysia, South Africa, Thailand, and Denmark”. Malaysian Journal of Science (MJS) 23 (December 30, 2004): 21–31. Accessed March 10, 2026. https://mjs.um.edu.my/index.php/MJS/article/view/9032.