ผลประเสริฐ พ.; วิทยถาวรวงศ์ พ. The Effectiveness of the Process of Developing the Life Quality of the Elderly under the Sufficiency Economy: A Case Study Lom Kao District, Phetchabun Province. Journal of Preventive Medicine Association of Thailand, [S. l.], v. 6, n. 3, p. 240–255, 2018. Disponível em: https://he01.tci-thaijo.org/index.php/JPMAT/article/view/132938. Acesso em: 29 aug. 2026.