Nuttaporn Kongpolphrom และ Pattama Patpong. (2013) A textual structure analysis of English argumentative essays on tourism. Mahidol University:ม.ป.ท.Nuttaporn Kongpolphrom และ Pattama Patpong. 2013. A textual structure analysis of English argumentative essays on tourism. ม.ป.ท.:Mahidol University;Nuttaporn Kongpolphrom และ Pattama Patpong. A textual structure analysis of English argumentative essays on tourism. ม.ป.ท.:Mahidol University, 2013. Print.