Rundon, T., D. Theerawanviwat, and P. . Siripanich. “Attributes and Cost of Owning a Seven-seater Personal Car’s License Plate”. Journal of Social Sciences and Humanities Research in Asia, vol. 29, no. 1, Feb. 2023, pp. 1-17, https://so05.tci-thaijo.org/index.php/psujssh/article/view/260756.