wattanasettanukul, polpipat. “Guidelines for Promoting Pre-Retirement Financial Planning Using the Six Thinking Hats Theory for Teachers Registered in OBEC Debt Clinic System”. Princess of Naradhiwas University Journal of Humanities and Social Sciences 13, no. 1 (January 15, 2026): 108–129. accessed September 13, 2026. https://so05.tci-thaijo.org/index.php/pnuhuso/article/view/282581.