Anusornphanich, P., and J. Saikam. “ADAPTATION IN CUSTOMER RELATIONSHIPS OF AVIATION SCHOOL AFTER RECOVERY COVID-19 OUTBREAK”. Phranakhon Rajabhat Research Journal : Humanities and Social Sciences, vol. 18, no. 2, Dec. 2023, pp. 338-55, https://so05.tci-thaijo.org/index.php/PNRU_JHSS/article/view/266539.