Simma, P. (2023). Development of learning achievement in Specific Contracts 2 of Bachelor of Law Students by Using the flipped classroom model. Journal of Humanities and Social Sciences Loei Rajabhat University, 4(2), 15–23. Retrieved from https://so01.tci-thaijo.org/index.php/husolru/article/view/260010 (Original work published June 30, 2022)