Pothasin, V. ., A. . Chanpan, and N. . Moonsarn. “Development of Lesson Handouts about Senior Scout’s Badges Mattayomsuksa 3, Sanpatong Wittayakom School, The Secondary Educational Service Area Office 34”. PAYAP UNIVERSITY JOURNAL, vol. 32, no. 1, July 2022, pp. 1-18, doi:10.14456/pyuj.2022.1.