Chairum, Panus, Pattariya Suwanboon, and Ketsarin Kongmian. 2023. “SUFFICIENCY ECONOMY APPLICATION FOR IMPROVING THE QUALITY OF LIFE TO RAISE INCOME AND THE WELL-BEING OF THE ELDERLY FAMILIES IN PHETCHABURI PROVINCE”. Journal of MCU Phetchaburi Review 5 (2):หน้า 83 - 99. https://so03.tci-thaijo.org/index.php/JPR/article/view/264600.