ยอดแก้ว ปราโมทย์. “Knowledge: Happiness Development in the Real World”. Journal of Educational Review Faculty of Education in MCU 3, no. 1 (September 4, 2018): 9–20. Accessed April 20, 2024. https://so02.tci-thaijo.org/index.php/EDMCU/article/view/143835.