Pan, Wang, Yarnaphat Shaengchart, and Pongsakorn Limna. 2026. “Effect of the 4Cs on project-based learning in digital education: evidence from private universities in Thailand”. APHEIT International Journal of Interdisciplinary Social Sciences and Technology 15 (1):35-45. https://so04.tci-thaijo.org/index.php/ATI/article/view/286689.