Srevichai, Suthasinee, and Wareerat Kaewurai. “A DEVELOPMENT OF AN INSTRUCTIONAL MODEL BASED-ON HAPPINESS LEARNING APPROACH TO ENHANCE THE KALYANAMITTA FOR STUDENTS TEACHER RAJABHAT UNIVERSITY”. Journal of Education and Innovation 22, no. 2 (March 24, 2020): 249–263. accessed October 4, 2026. https://so06.tci-thaijo.org/index.php/edujournal_nu/article/view/125952.