Krabeethong, Chayaporn. “ uality anagement Swiftlet’s est usiness in hailand”. Journal of Management Science Nakhon Pathom Rajabhat University 8, no. 1 (June 30, 2021): 198-215. ccessed December 1, 2021. https://so03.tci-thaijo.org/index.php/JMSNPRU/article/view/253356.