เขียวฉ่ำ นิคม, โพธิสุวรรณ ชัยฤทธิ์, and ไสยโสภณ ปิยะพงษ์. 2015. “Guidelines for Strengthening of the Student Council by Progressive Educational Approach for Schools under Phetchabun Primary Educational Service Area Office 2”. Journal of Industrial Education 14 (3):475-80. https://ph01.tci-thaijo.org/index.php/JIE/article/view/122581.