aussawariyathipat, sompong, P. Thuratham, W. Vichasorn, T. Triyakun, M. ThongKerd, and S. Arnuparb. “MARKETING MIX FACTOR AIRLINE PASSENGERS PERSPECTIVE TOWARD HIGH SPEED RAIL LINKED 3 AIRPORTS”. Rajamangala University of Technology Tawan-ok Social Science Journal, vol. 10, no. 1, June 2021, pp. 107-18, https://so05.tci-thaijo.org/index.php/SocialJournal2rmutto/article/view/242176.