ไทยแท้ ศิรวัตร. “The Relationship Between Gender and the Selection of Linguistic Politeness Strategies of Refusal to the Request Speech Act in Low-Cost Airline Business”. Language and Linguistics 36, no. 1 (December 1, 2017): 97–122. Accessed May 14, 2024. https://so04.tci-thaijo.org/index.php/joling/article/view/173477.