Kosalakorn Permpoonwiwat, Chompoonuh, and Uthai Krawglom. “Willingness to Pay for Road Safety Improvement of Foreign Visitors in Thailand”. Journal of Contemporary Social Sciences and Humanities 9, no. 2 (July 2, 2025): 8–16. accessed September 19, 2026. https://so12.tci-thaijo.org/index.php/jcsh/article/view/3362.