บุญเพ็ง ปรียาภรณ์. “The Quality of Life of The Elderly in Paikwang Subdistrict Administrative Organization, Banmho, Sraburi”. Journal of the Association of Researchers 28, no. 3 (October 6, 2023): 198–217. accessed August 30, 2026. https://so04.tci-thaijo.org/index.php/jar/article/view/268298.