In-klai, Lookkhwan, Phongluck Jitgaroon, and Wiraporn Pongajarn. 2019. “The Curriculum Development Process Higher Education: A Case Study of Pibulsongkram Rajabhat University”. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University 14 (1):158-74. https://so01.tci-thaijo.org/index.php/GraduatePSRU/article/view/133978.