Sitthichokvorakarn, V., Boonpheng, T., Nuallaong , W. and Jitvaropas, R. (2024) “Happiness in Studying Sciences and Mathematics Program of Grade 11 Students at Suankularb Wittayalai School”, Academic Psychiatry and Psychology Journal, 40(3), pp. 57–66. available at: https://he01.tci-thaijo.org/index.php/APPJ/article/view/273385 (accessed: 28 September 2026).