Baotham, Sumintorn. “The Use of Non-audit Services of Thai Listed Companies”. University of the Thai Chamber of Commerce Journal Humanities and Social Sciences 38, no. 4 (March 7, 2019): 1–14. accessed August 30, 2026. https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/176409.