Oraphun Chansungnern และ Paisarn Worakham. (2023) Problem-Based Learning Management to Promote Collaborative Problem-Solving Competency and Learning Achievement on Electricity of Grade 9 Students. <i>Interdisciplinary Academic and Research Journal</i>, <i>3</i>(5), 589-602.Oraphun Chansungnern และ Paisarn Worakham. "Problem-Based Learning Management to Promote Collaborative Problem-Solving Competency and Learning Achievement on Electricity of Grade 9 Students". Interdisciplinary Academic and Research Journal 3 (2023):589-602.Oraphun Chansungnern และ Paisarn Worakham. Problem-Based Learning Management to Promote Collaborative Problem-Solving Competency and Learning Achievement on Electricity of Grade 9 Students. DR.KEN Institute of Academic Development and Promotion.:ม.ป.ท. 2023.