อมรสิริพงศ์ ส. and น้อมเนียน อ. (2019) “A Development of Social Welfare System for the Elderly Labors in Informal Sectors to Reduce the Social Inequality in Special Economic Zone: A Case Study of Sa Kaeo Special Economic Zone (Phase II)”, Journal of Social Work and Social Administration. Bangkok, Thailand, 27(2), pp. 27–47. available at: https://so04.tci-thaijo.org/index.php/swjournal/article/view/232925 (accessed: 5 October 2026).