Ubon Ratchathani University Portal site for E-Thesis & E-Research
คลังวิทยานิพนธ์เเละงานวิจัย มหาวิทยาลัยอุบลราชธานี
] . (2019). Sixth grade English as a foreign language textbook selection processes and criteria case of schools in Si Sa Ket province. Faculty of Liberal Arts, Ubon Rachathani University, Ubon Rachathani.