Chummongkol, P., P. Sohsomboon, and C. Yuenyong. “Building up Trustworthiness in Qualitative Research to Improve the Quality of Education”. Journal of Teacher Professional Learning Community (JTPLC) (Online), vol. 3, no. 2, Aug. 2023, pp. 107-20, https://so05.tci-thaijo.org/index.php/JTPLC/article/view/263096.