Happy Sri pranut (2545 (2002)). Guidelines for troubleshooting Java naek listening and pronunciation consonant sounds in English and the student's second year. list of research. Faculty of Humanities, Chiang Mai University
Pranut Suksri. (2545). Needs to listen classifies employment and vowels and consonants in English Misconcepts year student 2. Research. Faculty of Humanities, Chiang Mai University
ประณุท suksri. (2545) solutions in listening, classify, and pronounce the vowels and consonants in English that the error of the year student. The 2. Research Humanities University.