Supaneewan Thanjitt. (1998) Verbal taboo in Thai. National Institute of Development Administration:ม.ป.ท.Supaneewan Thanjitt. 1998. Verbal taboo in Thai. ม.ป.ท.:National Institute of Development Administration;Supaneewan Thanjitt. Verbal taboo in Thai. ม.ป.ท.:National Institute of Development Administration, 1998. Print.