panthito, bundith. “A STUDY OF THE PROBLEMS OF ENGLISH SPEAKING SKILLS OF THE FIRST YEAR STUDENTS AT MAHACHULALONGKORNRAJAVIDYALAYA UNIVERSITY”. Journal of MCU Humanities Review, vol. 4, no. 2, July 2019, pp. 185-96, https://so03.tci-thaijo.org/index.php/human/article/view/164535.