เอมดิษฐ ช. (2018) “INDIRECT SPEECH ACTS OF STANDARD THAI SPEAKERS WITH DIFFERENT SOCIAL STATUSES”, Sripatum Review of Humanities and Social Sciences, 14(2), pp. 64–71. available at: https://so05.tci-thaijo.org/index.php/spurhs/article/view/116251 (accessed: 28 September 2026).