wattanasettanukul, polpipat. (2026). 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(1), 108–129. retrieved from https://so05.tci-thaijo.org/index.php/pnuhuso/article/view/282581