Meesri, Wiyada, and Unchalee Wongwattana. “Diachronic Study of Grammaticalization of the Word /Ɂan/”. Journal of Humanities Naresuan University 17, no. 2 (August 29, 2020): 97-120. Accessed December 6, 2020. https://so03.tci-thaijo.org/index.php/jhnu/article/view/246332.