Daengsi, Therdpong, Apiruck Preechayasomboon, Saowanit Sukparungsee, and Chai Wutiwiwatchai. 2012. “Thai Text Resource: A Recommended Thai Text Set for Voice Quality Measurements and Its Comparative Study”. KKU Science Journal 40 (4):1114-27. https://ph01.tci-thaijo.org/index.php/KKUSciJ/article/view/253354.