Saengadsapaviriya, Jongkolbordin, and Eakkasit Santiparb. 2018. “Confirmatory Factor of Service Quality of Public Bus Transport Between Thailand and Laos by P- TRANSQUAL Model”. Journal of Management Science Chiangrai Rajabhat University 13 (1):70-91. https://so03.tci-thaijo.org/index.php/jmscrru/article/view/128073.