Janya Narksompong. (2007) A study of Thai phonological features that cause pronunciation problems for Thai people. Thammasat University,:ม.ป.ท.Janya Narksompong. 2007. A study of Thai phonological features that cause pronunciation problems for Thai people. ม.ป.ท.:Thammasat University,;Janya Narksompong. A study of Thai phonological features that cause pronunciation problems for Thai people. ม.ป.ท.:Thammasat University, 2007. Print.