Chommanad Intajamornrak. (2021) Pronunciation of Standard Thai Vowels by Non-native Speakers. <i>Journal of Liberal Arts, Prince of Songkla University</i>, <i>13</i>(2), 42-65.Chommanad Intajamornrak. "Pronunciation of Standard Thai Vowels by Non-native Speakers". Journal of Liberal Arts, Prince of Songkla University 13 (2021):42-65.Chommanad Intajamornrak. Pronunciation of Standard Thai Vowels by Non-native Speakers. Faculty of Liberal Arts, Prince of Songkla University:ม.ป.ท. 2021.