ไทยแท้ ศ. (2017) “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(1), pp. 97–122. available at: https://so04.tci-thaijo.org/index.php/joling/article/view/173477 (accessed: 11 September 2026).