ค้าเจริญ ร่วม, ฉายายนต์ พิชญ์, and จำรัสพันธุ์ อุดม. “A COMPETENCY MODEL FOR LEARNING AREA HEADS AFFECTING LEARNING ACHIEVEMENT OF LEARNERS FOR PRIMARY SCHOOLS IN THE NORTH EASTERN REGION”. Sripatum Review of Humanities and Social Sciences 18, no. 2 (October 17, 2018): 112–122. Accessed May 17, 2024. https://so05.tci-thaijo.org/index.php/spurhs/article/view/151041.