Un-udom, Suwitchan. “Effects of 6+1 Trait Writing Model on Thai EFL Student Writing Achievements”. Journal of Research and Development Institute Rajabhat Maha Sarakham University 7, no. 1 (June 30, 2020): 241–254. Accessed April 28, 2024. https://so03.tci-thaijo.org/index.php/rdirmu/article/view/245106.