Wangtapan, Intuon, Nawee Udorn, and Chanwit Hanrin. “GUIDELINES FOR DEVELOPING STUDENT ASSISTANCE SYSTEM IN LEARNING LOSS WITHIN SCHOOLS UNDER NAKHON PHANOM PRIMARY EDUCATIONAL SERVICE AREA OFFICE 1”. Journal of Graduate School Sakon Nakhon Rajabhat University 21, no. 94 (September 30, 2024): 60–72. accessed December 7, 2025. https://so02.tci-thaijo.org/index.php/SNGSJ/article/view/268794.