Hansuksa, Napasorn, and Sukaroon Wongtim. “The Effects of Integrated Group Counseling to Develop Inner Strength of Mathayom Suksa VI Students in a School in Bangkok”. Ratchaphruek Journal 20, no. 1 (March 25, 2022): 38–47. accessed September 10, 2026. https://so05.tci-thaijo.org/index.php/Ratchaphruekjournal/article/view/253181.