ไชยพรมป., นันทะศรีว. and เพ็งสวัสดิ์ว. (2019) “Development of Training Curriculum to Enhance Problem-solving Skills of Bannontae School Students under Sakon Nakhon Primary Educational Service Area Office 3”, Journal of Roi Et Rajabhat University, 13(1), pp. 69-78. Available at: https://www.tci-thaijo.org/index.php/reru/article/view/185965 (Accessed: 18August2019).