ศิริธรรมจักร ส., Boonnan, B., สร้อยกุดเรือ น. and Leamsamrong, K. 2025. The Development of Problem-Solving Process Skills in Chemistry On Topic of Chemistry and Problem-Solving Using Project-Based Learning for Grade 12 Students at Yangtalatwittayakarn School. Journal for Developing the Social and Community . 12, 2 (Aug. 2025), 459–480.