Pongnarin Maowtub, Saiphin Siharak. (2020). The Learning Management of Project Based Learning along with Questioning Based on Sufficiency Economy Philosophy to Enhance Project Proceeding Ability and Thinking - Practicing Process for Secondary 3 (Grade 9) Students. International Journal of Advanced Science and Technology, 29(4s), 3516-3520. Retrieved from http://sersc.org/journals/index.php/IJAST/article/view/23497