Dhammavaddhano (Phumirang) PP. A Model for Promoting Social Studies Learning Skills Employing Tri-Sikkha Principles for Secondary School Students in Khon Kaen Municipality. i-ME [internet]. 2024 Sep. 30 [cited 2025 May 4];1(3):14-27. available from: https://so19.tci-thaijo.org/index.php/IME/article/view/574