Kuptanaroaj, Nattapon, Udomluk Koolsriroj, and Pongsatorn Mahavijit. 2025. “Development of an Online Self-learning Package to Improve English Reading Skills Based on the Common European Framework of Reference for Languages for Undergraduate Students”. Journal of Multidisciplinary in Humanities and Social Sciences 8 (5):1979-2001. https://so04.tci-thaijo.org/index.php/jmhs1_s/article/view/279818.