Krobthong, Patcharakorn, Sunchai Chucheep, and Phatsayakorn Laosawatdikul. “The Operation of White School Project for Free from Drugs and Vices in Schools Under Lopburi Primary Educational Service Area Office 1”. Journal of Roi Et Rajabhat University 18, no. 3 (December 29, 2024): 182–197. accessed September 11, 2026. https://so03.tci-thaijo.org/index.php/reru/article/view/282372.