Seanyen, T., W. Wentbap, W. Chuayprasit, K. Srayudh, and A. Hasoh. “Analysis of Dealing with COVID-19: The Impact on Aviation Industry”. Journal of Multidisciplinary in Humanities and Social Sciences, vol. 3, no. 2, June 2020, pp. 209-20, https://so04.tci-thaijo.org/index.php/jmhs1_s/article/view/243253.