Loetyingyot, S., S. Kamonlimsakun, and K. Boonsak. “Supply Chain Management for Tourism Development of Southern Isan Civilization”. University of the Thai Chamber of Commerce Journal Humanities and Social Sciences, vol. 40, no. 4, Dec. 2020, pp. 120-39, https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/241720.