Chulnoul, P., Therawiwat, M., Imamee, N. and Tansakul, S. (2019) “An Effect of Problem-Based Learning to Prevent Amphetamine Use Among Grade 8 Student, Nakornprathom Province”, Thai Journal of Health Education, 34(1), pp. 1–14. available at: https://he01.tci-thaijo.org/index.php/muhed/article/view/173873 (accessed: 13 September 2026).