Phatcharaphan Sakanlai และ Panida Sukseemuang. (2021) Effectiveness of Using Grammar Logs With Explicit Corrective Feedback in Improving Grammatical Ability for Writing Skill of Grade 9 Students. <i>Journal of Liberal Arts, Prince of Songkla University</i>, <i>13</i>(2), 144-169.Phatcharaphan Sakanlai และ Panida Sukseemuang. "Effectiveness of Using Grammar Logs With Explicit Corrective Feedback in Improving Grammatical Ability for Writing Skill of Grade 9 Students". Journal of Liberal Arts, Prince of Songkla University 13 (2021):144-169.Phatcharaphan Sakanlai และ Panida Sukseemuang. Effectiveness of Using Grammar Logs With Explicit Corrective Feedback in Improving Grammatical Ability for Writing Skill of Grade 9 Students. Faculty of Liberal Arts, Prince of Songkla University:ม.ป.ท. 2021.