Wongpunya, Teekayu, Sukanya Samutkhet, Chalermporn Thongpoon, Pornpat Sam-ang, and Krit Sutjarittangtham. “Development of a Direct Current Training Course by KidBright to Promote Essential Skills in the 21st Century for 11th Grade Students, Khunkuanwiththayakhom School, Phayao Province”. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University 14, no. 1 (August 14, 2019): 63–79. Accessed May 4, 2024. https://so01.tci-thaijo.org/index.php/GraduatePSRU/article/view/205841.