เปียผ่อง ส. “Welfare Pension Fund Baht Per Day for the Elderly Along the Sufficiency Economy Philosophy in the Opinion of Nongchok Credit Union Members Petchaburi Province”. Journal of Yanasangvorn Research Institute Mahamakut Buddhist University, vol. 1, no. 1, Dec. 2010, pp. 137-4, https://so04.tci-thaijo.org/index.php/yri/article/view/172674.