Danty Jame. (2558) Ethnocentrism and English Language Proficiency among High School Students at a Private School in Thailand. มหาวิทยาลัยรังสิต:ม.ป.ท.Danty Jame. 2558. Ethnocentrism and English Language Proficiency among High School Students at a Private School in Thailand. ม.ป.ท.:มหาวิทยาลัยรังสิต;Danty Jame. Ethnocentrism and English Language Proficiency among High School Students at a Private School in Thailand. ม.ป.ท.:มหาวิทยาลัยรังสิต, 2558. Print.