Naruadol Chancharu และ Kingkarn Thepkanjana. (2009) The polyfunctionality of the word form /tôŋ/ in Thai : a cognitive linguistic study. Chulalongkorn University:ม.ป.ท.Naruadol Chancharu และ Kingkarn Thepkanjana. 2009. The polyfunctionality of the word form /tôŋ/ in Thai : a cognitive linguistic study. ม.ป.ท.:Chulalongkorn University;Naruadol Chancharu และ Kingkarn Thepkanjana. The polyfunctionality of the word form /tôŋ/ in Thai : a cognitive linguistic study. ม.ป.ท.:Chulalongkorn University, 2009. Print.