Yu-Hsiu Lee, H., and J. Clontz. “Reviewing the Prehistoric Linguistic Relationships of the Tai–Kadai Language Family and Its Putative Linguistic Affiliations: A meta–analysis Study and Abbreviation Edition”. Journal of Liberal Arts Prince of Songkla University, vol. 4, no. 1, Aug. 2016, p. 48, https://so03.tci-thaijo.org/index.php/journal-la/article/view/64750.