Phadaeng, Apichat, and Mayuree Thawornpat. “Consonant variation among three generations of speakers of the Bisu language”. Journal of Language and Culture 39, no. 2 (December 2, 2020): 23–45. accessed September 10, 2026. https://so03.tci-thaijo.org/index.php/JLC/article/view/248414.