Narongrit Sopa. (2007) A Study on the Effects of the Teaching-Learning Cycle on English Linguistic Ability Achievement of University Level Students : a Case Study of Rajabhat Maha Sarakham University. <i>Rjabhat Maha Sarakham University Journal Humanities and Social Sciences</i>, <i>1</i>(1), 13-18.Narongrit Sopa. "A Study on the Effects of the Teaching-Learning Cycle on English Linguistic Ability Achievement of University Level Students : a Case Study of Rajabhat Maha Sarakham University". Rjabhat Maha Sarakham University Journal Humanities and Social Sciences 1 (2007):13-18.Narongrit Sopa. A Study on the Effects of the Teaching-Learning Cycle on English Linguistic Ability Achievement of University Level Students : a Case Study of Rajabhat Maha Sarakham University. Rjabhat Maha Sarakham University:ม.ป.ท. 2007.