Chaiwatthanakunwanich, Sophon. “Assessment of Standards for Performance Sign Language Interpreters 2018 (2561)”. Journal Of Ratchasuda Institute for Research and Development of Persons With Disabilities 16, no. 2 (December 28, 2020): 18–35. Accessed April 27, 2024. https://so03.tci-thaijo.org/index.php/RSjournal/article/view/249044.