Prapattong, P., C. Hirunro, and P. Thammathi. “‘Ayok’: Buddhist Space of the Plang (Tai Luay or Lua) Ethnic Group”. Journal of Thai Studies, vol. 17, no. 2, Mar. 2023, pp. 1-24, https://so04.tci-thaijo.org/index.php/TSDJ/article/view/264251.