Attasith Boonsawasd. 2001. Language identification by tones : Lahu, Akha, and Karen. Field of Study Linguistics, Mahidol University;
Attasith Boonsawasd. (2001) Language identification by tones : Lahu, Akha, and Karen . Mahidol University/Bangkok.
Attasith Boonsawasd. Language identification by tones : Lahu, Akha, and Karen. . Bangkok:Mahidol University, 2001.
Attasith Boonsawasd. (2001) Language identification by tones : Lahu, Akha, and Karen . Mahidol University/Bangkok.