Jongkatkorn , Chaowarit. 2026. “Development Of a Phenomenon-Based Learning Manual for Master’s Degree Students in Social Studies, Mahachulalongkornrajavidyalaya University, Nakhon Sawan Campus”. Journal of Dhamma for Life 32 (3):222-38. https://so08.tci-thaijo.org/index.php/dhammalife/article/view/6330.