Panyaphat Piam-O-Pad และ Sukhuma-Vadee Khamhiran. (2010) A study of student's motivation and attitude towards learning Thai : a case of students in Mathayom Suksa 3, Prapathom Withayalai School, Nakorn Pathom. Mahidol University:ม.ป.ท.Panyaphat Piam-O-Pad และ Sukhuma-Vadee Khamhiran. 2010. A study of student's motivation and attitude towards learning Thai : a case of students in Mathayom Suksa 3, Prapathom Withayalai School, Nakorn Pathom. ม.ป.ท.:Mahidol University;Panyaphat Piam-O-Pad และ Sukhuma-Vadee Khamhiran. A study of student's motivation and attitude towards learning Thai : a case of students in Mathayom Suksa 3, Prapathom Withayalai School, Nakorn Pathom. ม.ป.ท.:Mahidol University, 2010. Print.