Duangchan, N., Khampla, N. and Purkmee, P. (2024) “Development of analytical thinking skills in geography subjects of grade 8 students using a set of skill-enhancing activities together with learning management using the CIPPA model”, Doctor of Philosophy in Social Sciences Journal, 3(1), pp. 82–97. available at: https://so08.tci-thaijo.org/index.php/dpssj/article/view/3172 (accessed: 4 October 2026).